Communications Intelligence/Electronic Warfare Operator

You are the junior collector on the mission floor. You do not yet own the seat, but you own the watch — and on a Radio Battalion operations shift, a missed signal or a sloppy report is not a training shortfall, it is a gap in the Marine commander's intelligence picture that someone downstream is going to pay for.

You finish the 2621 technical training pipeline at NTTC Corry Station, NAS Pensacola, report to 1st, 2d, or 3d Radio Battalion, and get slotted into a collection shift under a staff sergeant's supervision. Your week is collection operations in the mission operations center (MOC) — manning your assigned SIGINT collection system, monitoring assigned search parameters, logging activity in the mission log, flagging anomalies to the shift supervisor — and the sustainment work that keeps the mission alive: equipment checks, system troubleshooting, classified material handling and accountability, and the training events (IIR writing drills, signals analysis exercises, physical training, rifle qual) your section OIC slots on the training calendar. You are not making targeting decisions yet. You are the ears and the fingers on the keyboard. The staff sergeant is making the decisions, but he is making them off what you hand him, and if you hand him garbage, the report that goes up the chain is garbage.

• 01Operate assigned SIGINT collection systems through a full watch rotation — monitor, log, flag, and pass information to the shift supervisor without missing a reportable event or generating a false-positive that wastes the analyst's time.
• 02Write a preliminary Intelligence Information Report (IIR) that is factually accurate, sourced only from what you observed, and formatted to ICD 203 analytic standards — no editorializing, no characterization you cannot support.
• 03Handle, store, and account for classified material — SIGINT product, collection logs, system access tokens — under USSID SP0018 and your unit's classified material control procedures, every time, without exception.
• 04Conduct a physical security check on assigned equipment and report discrepancies before the shift change, not after — the shift that finds the problem on their watch owns the problem.
• 05Zero and qualify the M4/M16 to the Annual Rifle Training (ART) standard — Expert is the expected floor, because Radio Battalion Marines are still infantry-capable Marines and the Defense Language Institute / NTTC pipeline does not change that.
• 06Pass the unit's periodic reinvestigation (PR) checkpoints with zero reportable foreign contacts, financial discrepancies, or conduct issues — the TS/SCI is the job; lose it and there is no MOS to come back to.

• —NAVMC 3500.20 — Intelligence/Electronic Warfare Training and Readiness Manual (the source of every individual and collective task you are evaluated against as a 2621).
• —MCWP 2-26 — Marine Air-Ground Task Force Intelligence Operations (the unclassified operational framework your collection support plugs into; understand the MAGTF intelligence cycle you are feeding).
• —ICD 203 — Analytic Standards (the Intelligence Community-wide standard your IIRs must meet; IC policy applies to Marine Corps SIGINT products).
• —DoD 5240.1-R — Procedures Governing the Activities of DoD Intelligence Components (the governing authority for collection conduct and the legal limits of what you do on the mission floor).
• —MCDP 1 — Warfighting (every Marine reads it; you will be expected to articulate how the signals you are collecting translate into an understanding of the enemy's intent).
• —MCO 6100.13 — Marine Corps Physical Fitness, Body Composition, and Military Appearance (PFT/CFT standards; Radio Battalion does not excuse a failed PT test because your work is in an air-conditioned MOC).

• —1st-Class PFT and CFT under MCO 6100.13 — your section sergeant has seen the SIGINT Marines who let their physical standards decay and they will not let it happen to you on their watch.
• —Annual Rifle Qualification: Expert badge, because every 2621 is a Marine rifleman first and your FitRep reflects your qual score.
• —TS/SCI clearance maintained with zero reportable issues — annual foreign contact reports current, finances in order, no significant derogatory information to the security manager.
• —Tan Belt MCMAP out of training; Gray Belt before LCpl; Green Belt before any Cpl board consideration under MCO 1500.54.
• —Earn LCpl on the first look; your section SNCO is watching the composite score and a second-look promotion in an intelligence unit that runs on reliability is noted and remembered.

• —Logging a reportable signal event late because you were not sure it was significant. The call on significance goes to the shift supervisor — your job is to flag and pass, not to sit on it while you second-guess yourself.
• —Writing a preliminary IIR with characterizations or analysis beyond what you directly observed. Your job at this rank is accurate reporting, not analytic judgment — every word you add beyond the observed fact is a liability the analyst has to scrub out.
• —Posting anything about your work, your unit, your assigned systems, or your location on any social media platform. Radio Battalion SIGINT work is classified; the S2 runs sweeps and the commanding officer takes it personally.
• —Missing a classified material turn-in or sign-out deadline and hoping nobody notices. The classified material custodian always notices, the security manager always finds out, and a clearance-related incident at E-1 to E-3 can end the MOS before it starts.
• —Letting your physical fitness or rifle qualification standards slide because the mission is indoors. The infantry battalion you are supporting in the field expects every Marine attached to the MAGTF to carry the load — including the one who usually sits at a collection terminal.

The good junior 2621 is invisible the right way: watch manned without gaps, collection logs clean, preliminary IIRs formatted correctly on the first pass, classified materials accounted for at every shift change, rifle qual at Expert, and zero clearance incidents. By month nine the shift supervisor is pulling him for the harder collection parameter without explaining the context twice. By month eighteen the section staff sergeant is handing him the IIR training problem for the boot PFC that just checked in.

You are the first-line leader on the collection floor. You are not just running your own collection position — you are the NCO a two-to-three-Marine team looks to during the watch, and the staff sergeant is deciding whether to trust you with a shift floor before you know he is watching.

You own a collection position and you are starting to lead the Marines to your left and right. You run shift PCIs, you check your team's mission logs before they go to the watch officer, you mentor the boot PFCs on IIR formatting and signal logging, and you write proficiency and conduct marks that feed your Marines' composite scores. The administrative load grows with the chevron: the Cpl board preparation, the composite score management, the Corporals Course packet. But the mission floor work is still where you are evaluated — a Cpl who can run a complex collection operation cleanly and pass the product up the chain with zero corrections from the staff sergeant is the Cpl who gets the shift supervisor seat at Sgt. You are also starting to see the EW side of the 2621 mission if your unit has EW billets — working alongside the EW operators on MEWSS or man-portable platforms, learning how collection and effects integrate inside the MAGTF fires and intelligence cycle.

• 01Lead a two-to-three-Marine collection team through a full watch rotation — PCC/PCI of equipment and classified materials, mission log review, IIR quality check — and produce product the watch officer does not have to send back.
• 02Review and correct a junior Marine's preliminary IIR for analytic standards (ICD 203), factual accuracy, and source attribution before it leaves the section, without leaving the correction as a note — teach the standard while fixing the product.
• 03Operate at the Cpl level across multiple collection scenarios, including collection and EW coordination tasks, without requiring the staff sergeant to reconfigure the watch floor around your knowledge gaps.
• 04Run a PCC/PCI on your team's assigned SIGINT and EW systems, classified materials, and personal equipment before mission execution — not a head-nod inventory but a hands-on check that finds the discrepancy before the watch starts.
• 05Write clean proficiency and conduct marks that the reporting senior can defend — observed behavior, action-result-impact, no inflation the section SNCO cannot justify at the Cpl review board.
• 06Manage your TS/SCI periodic reinvestigation timeline without letting it become the section security manager's problem — know your next review date, report foreign contacts on time, keep the finances in order.

• —NAVMC 3500.20 — Intelligence/Electronic Warfare T&R Manual (the collective task standard your team is evaluated against at Cpl).
• —ICD 203 — Analytic Standards (the IC writing standard you are now enforcing on junior Marines' IIRs, not just meeting yourself).
• —ICD 206 — Sourcing Requirements for Disseminated Analytic Products (governs how SIGINT sources are characterized in reporting; understand what is permissible before you sign off on a product).
• —MCWP 3-43.1 — Electronic Warfare in Marine Corps Operations (the doctrinal reference for the EW integration your 2621 mission increasingly touches at the Cpl level).
• —MCO 1610.7 — Performance Evaluation System (you write proficiency and conduct marks now; the FitRep for you is coming and you need to understand what the reporting senior sees).
• —MCO 1400.32 — Marine Corps Promotion Manual (composite scores, cutting scores, board eligibility for Sgt — pull the current MARADMIN and know your number before you ask the section SNCO where you stand).

• —Corporals Course graduate — required on the path to Sgt; do not let the slot drop and do not assume it is coming automatically.
• —Green Belt MCMAP minimum; Brown Belt is the bar you should be chasing before Sergeants Course consideration under MCO 1500.54.
• —1st-Class PFT and CFT; your Marines are watching your scores and the section SNCO is watching the team average.
• —Section collection qualification at the team-lead level signed by the watch officer or OIC — unqualified collection leaders on a Radio Battalion mission floor are a readiness gap, not a training shortfall.
• —Composite score tracked monthly in TFRS — pull the current cutting score for 2621 to Sgt before you ask the section SNCO where you stand.

• —Coasting on the Cpl chevron while your collection technique plateaus. The composite score does not coast, the Sergeants Course slot does not coast, and the mission floor knows the day you stopped drilling.
• —Signing off on a junior Marine's IIR without reading it because you trust him. Your name is on the product when it goes to the watch officer, and an ICD 203 violation at the Cpl review level is yours.
• —Skipping the Corporals Course packet because the slot is "probably next quarter." Slots evaporate; cutting scores do not move for you, and 2621 Cpls who wait get passed by the ones who do not.
• —Losing track of a classified item during a shift change and hoping it reconciles before the custodian runs the inventory. It never reconciles quietly, and the security manager investigation is worse than the disclosure.
• —Discussing collection operations, mission parameters, or system performance outside of secured spaces — including with family, with other service members who do not have the specific access, and especially online. The compartmented nature of 2621 work means the debriefing rules are real and the consequences are federal.

The good 2621 Cpl is the team lead the watch officer puts on the most complex collection problem of the shift without briefing the context twice. His junior Marines' IIRs come back from the analyst with corrections marked in the margins, not returned for rewrite — because he caught the errors before the product left the section. The section SNCO has already mentioned him to the OIC for the Sgt board and the next shift supervisor seat, and the Corporals Course slot is locked.

The mission floor is yours on your watch. Three to six Marines, an assigned collection and EW mission set, and the intelligence reports that go up to the MAGTF commander — they are all products of whether you ran the shift right. The watch officer is backstopping you; the section staff sergeant is watching whether you need the backstop.

You run a collection and EW section or a mission shift — the Marines, the equipment, the classified material accountability, the IIR production, and the shift log that the intelligence officer reads before the morning brief. You write FitReps on your Cpls, you run the shift floor through occupation, transition, and mission-pause procedures without the section SNCO standing over you, and you are the Marine the watch officer calls when a collection event is time-sensitive and the section needs someone who does not need context repeated twice. You are also starting to produce and review finished IIRs at the Sgt level — not just preliminary collection logs but analytical products that meet ICD 203 and ICD 206 standards, that cite properly, and that the S-2 can forward without scrubbing your characterizations. At senior Sgt you are the natural first look at the NSA billet pipeline and the DIA SIGINT collection billet at E-5-plus — the selection package starts with your FitRep profile and the section SNCO's recommendation.

• 01Run a full collection and EW mission shift — briefing incoming Marines, reviewing the mission log, validating IIR products before submission, accounting for classified materials at shift change — without the watch officer having to intervene.
• 02Write finished IIRs that meet ICD 203 analytic standards and ICD 206 sourcing requirements, and review your Cpls' preliminary reports against the same standard before they leave the section.
• 03Brief the watch officer and the section SNCO on mission floor activity, significant collection events, and reporting status in a clear, jargon-clean verbal brief the intelligence officer can repeat up the chain.
• 04Mentor your Cpls into collection-team-lead-qualified Marines and Sgt-board-ready candidates — drilling IIR standards, clearing qualification tasks, and building the composite scores that lead to the Sergeant board.
• 05Write clean FitRep Section A entries for your Cpls — observed behavior, action-result-impact, no inflation, attributes the reporting senior can defend.
• 06Manage the section's TS/SCI housekeeping — periodic reinvestigation timelines, foreign contact reporting reminders, classified material accountability — without the security manager having to chase your Marines.

• —NAVMC 3500.20 — Intelligence/Electronic Warfare T&R Manual (Sgt/NCOIC collective task standards you run the section and the shift against).
• —ICD 203 — Analytic Standards (the IC standard you now enforce on section products and teach to your Cpls; own the document, not the summary).
• —ICD 206 — Sourcing Requirements for Disseminated Analytic Products (the sourcing standard for every SIGINT product your section produces; one sourcing violation in a disseminated product traces back to the shift NCOIC).
• —MCWP 3-43.1 — Electronic Warfare in Marine Corps Operations (EW integration doctrine; at Sgt you are coordinating SIGINT and EW activities, not just running one side of the mission).
• —MCO 1610.7 — Performance Evaluation System (you write FitReps now, not just receive them; know what the reviewing officer reads).
• —MCO 1400.32 — Marine Corps Promotion Manual (composite scores, cutting scores, board eligibility for SSgt; pull the current MARADMIN and know your FitRep profile before you sit the board).

• —Sergeants Course graduate — required on the path to SSgt, no exceptions.
• —Brown Belt MCMAP minimum; Black Belt is what the section SNCO notes on your FitRep in this community.
• —1st-Class PFT and CFT; your section average is watched, and a shift NCOIC who cannot maintain physical standards in an intelligence community that runs on reliability sets the wrong tone.
• —Section collection and IIR production evaluation rated at unit standard or above on the Radio Battalion T&R assessment — your FitRep and the watch officer's depend on it.
• —FitRep profile building toward SSgt board consideration — if your relative value is at or below battalion average after two cycles, you need an honest conversation with the section SNCO now, not at the board.

• —Verbal counseling only, nothing in writing. If the page-11 entry or formal counseling does not exist, the incident did not happen, and the company commander cannot defend you when it becomes a board issue.
• —Signing a shift log you did not actually review because you trust the team. That is the shift the analyst calls back about, and the NCOIC's name is on the log.
• —Doing the IIR editing yourself instead of walking the Cpl through the correction. The section will produce bad products when you go to Sergeants Course and you will be the reason.
• —Letting a classified material discrepancy run through the next shift change hoping it resolves. It does not resolve quietly, the security manager opens a preliminary inquiry, and the section SNCO finds out the way you do not want.
• —Treating the NSA or DIA billet pipeline as automatic at Sgt. Those billets are competitive, the selection packages are reviewed, and the FitRep profile from E-4 forward is what decides whether your name goes on the list.

The good 2621 Sgt is the shift NCOIC the watch officer does not have to check on at the three-hour mark. His IIRs come back from the analyst with no sourcing violations and his Cpls' preliminary products require one redline, not five. The section SNCO can take leave for two weeks knowing the mission floor will not fall apart and that the shift log will be accurate when he returns. His Marines' composite scores are climbing, Corporals Course slots are locked, and the Sgt already has a conversation with the SNCO about whether the NSA billet or the SSgt board comes first.

You are the senior NCO of the collection and EW section. The watch officer has the authority; you have the knowledge, the credibility, and the mission floor — and if you are doing the job right, the junior Marines do not always know where one ends and the other begins.

You run the section's enlisted side — training plans, qualification tracking, IIR quality standards, NSA and DIA representative coordination, classified material program, FitRep cycles for your Sgts — for a population doing some of the most technically demanding and legally constrained work in the MAGTF. You write three to four Sgt FitReps per cycle, you build the section's training plan against the NAVMC 3500.20 T&R requirements and the Radio Battalion's operational calendar, and you are the enlisted voice in the intelligence officer's planning cell when the battalion is integrating SIGINT/EW effects into the fires and targeting process. At SSgt you are also the Marine who can walk into a joint SIGINT or EW coordination meeting with NSA or DIA representatives and represent the section's capabilities and reporting honestly — without overpromising what the collection mission can deliver and without leaving the table before the intelligence officer understands what the section actually needs. You are building your Sgts into SSgt-board-ready Marines and your Cpls into Sgt candidates, and the OIC knows your personnel by name because you have been briefing them honestly for two years.

• 01Build and defend a section quarterly training plan aligned to NAVMC 3500.20 T&R requirements, classified material handling requirements, and the Radio Battalion operational calendar — not a wish list, an executable schedule.
• 02Write three to four Sgt FitReps per cycle that the reporting senior can defend at the battalion FitRep review — clean Section A, defensible relative value, no inflation.
• 03Coordinate SIGINT collection and EW activities at the section level with NSA representatives and the battalion intelligence officer, representing the section's capabilities accurately and bringing the watch officer into the conversation before it becomes a commitment.
• 04Mentor three Sgts into SSgt-board-ready candidates and Corporals Course graduates — IIR quality standards, collection qualification, FitRep prep, composite score management.
• 05Run the section through a pre-deployment readiness evaluation — T&R task completion, clearance status, equipment accountability, IIR production standards — without the battalion S-2 finding the gaps first.
• 06Manage the section's TS/SCI program — PR timelines, foreign contact reporting, incident reporting — as the senior NCO who the security manager calls before it becomes a formal inquiry.

• —NAVMC 3500.20 — Intelligence/Electronic Warfare T&R Manual (section-level collective standards you build the training plan against; you are evaluated on T&R completion, not effort).
• —MCWP 2-26 — MAGTF Intelligence Operations (the intelligence cycle you are shaping SIGINT/EW effects into; at SSgt you are in the planning cell, not just executing).
• —MCWP 3-43.1 — Electronic Warfare in Marine Corps Operations (EW integration doctrine; at SSgt you are briefing EW options and constraints, not just operating the system).
• —ICD 203 and ICD 206 — Analytic Standards and Sourcing Requirements (the IC reporting standards you enforce on section products and teach to your Sgts).
• —MCO 1610.7 — Performance Evaluation System (FitRep mechanics you now teach to your Sgts and explain to your Cpls).
• —MCO 1400.32 — Marine Corps Promotion Manual (SSgt-to-GySgt board mechanics, FitRep relative-value impact; pull the current MARADMIN for the board cycle).

• —Career Course (resident or distance) completed; SNCO Academy slot for GySgt-level resident as soon as the FitRep profile supports it.
• —Black Belt MCMAP — at the SSgt level the section expects you to be one of the senior instructors in the battalion.
• —Section T&R completion rate at or above the battalion standard before every readiness evaluation — the S-2 sees the T&R report and knows whose section is carrying a gap.
• —FitRep relative value above battalion average — the SSgt-to-GySgt board is FitRep-driven, and one weak cycle moves the timeline by years in a community this small.
• —NSA/DIA billet pipeline eligibility maintained — profile clean, languages or technical skills current, section SNCO recommendation documented.

• —Writing a FitRep as a performance wish list rather than an evaluation. The reporting senior remembers the SSgt who inflated, and the next GySgt board reads both versions.
• —Agreeing to a collection requirement in a joint coordination meeting without bringing the watch officer into the conversation first. A commitment the section cannot meet is a miss that goes in the battalion S-2's hot-wash, not yours alone.
• —Letting one Sgt coast because you trust him. That is the shift the IIR quality violation comes from, and the section NCOIC absorbs it on the FitRep.
• —Letting clearance paperwork for any Marine in the section slip past the quarterly check. A revoked clearance in a Radio Battalion SIGINT section is not a personnel problem — it is a mission gap the OIC briefs to the battalion commander.
• —Hiding section morale or retention problems from the OIC to look good. The S-2 will hear it from the intelligence officer before you walk back to the section, and the GySgt board reads FitReps written by disappointed reporting seniors.

The good 2621 SSgt runs a section the intelligence officer can brief to the battalion commander without a qualifier. His Sgts' IIRs meet IC standards without a scrub cycle, his pre-deployment T&R completion is on the board before the OIC asks, and the NSA representatives in the joint coordination meeting know his name because he showed up prepared and told the truth about what the section could deliver. His GySgt board packet is clean and the OIC is already telling the CO that this SSgt is going to be good for the battalion when he comes back wearing the chevrons.

You are the senior SIGINT/EW NCO in the battalion. The intelligence officers are writing the requirements; you are the one who knows whether the section can actually execute them, whether the product is defensible up the IC chain, and whether the Marines running the collection floor have everything they need except your supervision.

You run the Radio Battalion's collection and EW operations floor at the senior enlisted level — training programs, readiness assessments, IIR quality standards, NSA and DIA billet nominations, TS/SCI program management, and the enlisted performance record for a battalion whose mission is classified end-to-end. You write three to five SSgt FitReps per cycle, you advise the battalion S-2 and the CO on SIGINT/EW capability gaps and manning shortfalls the O-side cannot see from the planning cell, and you manage the pipeline of Marines who are ready for the NSA GS-12/13 civilian transition, the DIA SIGINT collection billet, or the reenlistment path that keeps them in the Radio Battalion mission through a second decade. You are also the senior enlisted Marine responsible for the intelligence community relationships that sustain the battalion's reporting quality — the NSA representatives, the DIA elements, the theater SIGINT managers — and for keeping those relationships honest when the battalion is under-resourced or the mission requirement exceeds what the section can actually produce. The 1stSgt is above you on the enlisted side; you are the occupational expert the CO calls when the question is whether the SIGINT/EW capability is ready for the deployment.

• 01Build and defend a Radio Battalion collection and EW training program aligned to NAVMC 3500.20 T&R requirements, the battalion's operational tasking calendar, and the IC reporting standards — and brief it to the CO and S-2 without a qualifier.
• 02Write three to five SSgt FitReps per cycle that the battalion FitRep board can defend — clean attributes, defensible relative value, rationale aligned to observed performance.
• 03Advise the battalion S-2 and CO honestly on SIGINT/EW collection capability — what the section can sustain, what it cannot, and what the gap looks like in the MAGTF intelligence picture — in the planning cell before the OPORD is signed.
• 04Manage the battalion's NSA and DIA billet nomination pipeline — identifying candidates, building packages, and coordinating with the IC element coordinators through the proper billet assignment channels.
• 05Run the battalion's TS/SCI program as the senior SNCO — PR timelines, incident reports, foreign contact reporting, annual security training compliance — with zero audit findings the security manager escalates.
• 06Mentor four SSgts into Career Course graduates and GySgt-board-ready candidates, with honest reads on who belongs in the NSA/DIA pipeline versus who is a Radio Battalion career operator.

• —NAVMC 3500.20 — Intelligence/Electronic Warfare T&R Manual (battalion-level collective standards you build the training program against; you are accountable for T&R completion across multiple sections).
• —MCWP 2-26 — MAGTF Intelligence Operations (the intelligence framework you advise the CO inside; at GySgt you are in the fires and targeting meetings, not the mission floor).
• —MCWP 3-43.1 — Electronic Warfare in Marine Corps Operations (EW integration doctrine; you are the senior enlisted voice on EW employment options and constraints at battalion level).
• —DoD 5240.1-R — Procedures Governing the Activities of DoD Intelligence Components (the governing authority for SIGINT/EW collection conduct; at GySgt you are certifying that your section operates within it).
• —MCO 1610.7 — Performance Evaluation System (FitRep mechanics you teach to your SSgts and explain to your Sgts).
• —MCO 1400.32 — Marine Corps Promotion Manual (GySgt-to-MSgt/1stSgt board mechanics; pull the current MARADMIN for the slate and know where your profile sits).

• —SNCO Academy Advanced Course (Career Course) graduate; SNCO Academy Senior Course slated when the MSgt board approaches.
• —Black Belt Instructor MCMAP — at the GySgt level in a Radio Battalion you are one of the senior MCMAP instructors in the battalion.
• —1st-Class PFT and CFT; the battalion formation watches the GySgt's scores and an intelligence SNCO who has let physical standards decay while telling Marines the mission floor is the mission sets the wrong tone.
• —Battalion T&R completion rate on the S-2 brief at or above the regiment standard before every readiness assessment — the regimental commander sees the chart and knows whose battalion is dragging.
• —FitRep profile that the senior reporting official can defend at the MSgt/1stSgt board — relative value, attributes, and the NSA/DIA billet nominations that show the Radio Battalion senior enlisted community is producing.

• —Letting one SSgt run a section unchecked because you trust him. That is the section the IC quality reviewer calls back about, and the battalion S-2 brief to the CO includes the section NCOIC's name.
• —Confusing tight with the intelligence officer with aligned with the intelligence officer. The battalion needs you to push back honestly — in his office, about collection gaps and manning shortfalls, with the door closed — before the plan is signed.
• —Carrying a conflict with a peer GySgt into the battalion operations environment. The 1stSgt notices, the battalion commander notices, and the FitRep board reads both RO columns.
• —Letting a TS/SCI incident sit at the section level because the SSgt "handled it." You are the senior SNCO; the security manager calls you, not the SSgt, when it escalates, and the preliminary inquiry covers your supervision.
• —Going around the 1stSgt to the battalion executive officer. You will be wrong on the facts, removed from the planning cell, and the Corps does not forget a GySgt who broke the chain in a classified environment.

The good 2621 GySgt is the SNCO the battalion S-2 takes to the theater SIGINT coordination meeting because he knows the section's capability ceiling and says so clearly before it becomes someone else's problem. His SSgts' sections produce IIRs that meet IC standards without a quality-review cycle, his NSA billet nominations get approved because the packages are clean, and the CO can brief the regiment on SIGINT/EW readiness without a hedge. The 1stSgt is already talking to the BSgtMaj about whether this GySgt is MSgt track or whether the Radio Battalion keeps him as the operations chief one more deployment cycle.

You are the standard-bearer for a classified mission community where the formation's trust in the integrity of the intelligence product begins and ends with whether they trust you. The split between 1stSgt/SgtMaj (troop leadership) and MSgt/MGySgt (SIGINT/EW occupational SME — HQMC intelligence staff, IC liaison, schoolhouse senior enlisted, Radio Battalion 1stSgt) is the defining career decision of the last decade.

As 1stSgt you run the Radio Battalion company — 130-180 Marines, the company office, the section SNCOs, the training calendar, and the boundary between what the intelligence officers need and what the enlisted force can actually sustain across a deployment cycle. As MSgt you are the senior occupational SME — HQMC intelligence staff senior enlisted, IC element coordinator, Radio Battalion operations staff senior, or the schoolhouse senior enlisted at NTTC Corry Station shaping the next generation of 2621 collectors and section NCOICs. As SgtMaj you advise the battalion or regimental commander on every enlisted decision in a community where the personnel decisions are as sensitive as the intelligence products, and where a single clearance incident or IIR fabrication scandal can damage the Radio Battalion's IC relationships for years. As MGySgt you are the 2621 community's occupational pinnacle — the Marine the MMPB calls when the MOS roadmap needs rewriting or the collection standards need an honest assessment against what the IC actually requires. You write fewer FitReps but the ones you write decide who the Radio Battalions have leading their sections for the next ten years.

• 01Run a 1stSgt's call that handles accountability, training, discipline, SIGINT security incidents, TS/SCI program updates, and family readiness in 30 minutes and in the right sequence — because the mission floor does not pause for a long formation.
• 02Build a Radio Battalion company training and tasking calendar with the CO and the GySgt that survives the regimental BUB, IC coordination requirements, and the deployment cycle without burning out the collection sections.
• 03Mentor four GySgts as the next 1stSgt / MSgt cohort, with honest reads on who is troop-leadership track and who is IC-liaison / schoolhouse / operations-staff track.
• 04Walk the collection floor during a battalion readiness evaluation and identify the IIR quality gaps, the TS/SCI accountability discrepancies, and the collection procedure deviations before the IC quality reviewer does.
• 05Advise the battalion CO and the S-2 honestly on enlisted morale, retention, and the second-order effects of operational tempo, billet assignments, and IC pipeline management on the sections that have to execute.
• 06Brief the BSgtMaj and the regimental SgtMaj on the 2621 community's health — promotion rates, IC billet fills, reenlistment patterns, school pipeline performance — with numbers, not impressions.

• —MCDP 1 — Warfighting; MCDP 2 — Intelligence (you teach both, not consume them; MCDP 2 is specifically yours and the Radio Battalion CO expects you to brief the intelligence cycle as fluently as the maneuver doctrine).
• —MCO 1610.7 — Performance Evaluation System (you are the rater or reviewing officer on the FitReps that decide the next 1stSgt and MSgt slate).
• —MCO 1400.32 — Marine Corps Promotion Manual (1stSgt / SgtMaj / MGySgt board mechanics; pull the current MARADMIN for the slate).
• —DoD 5240.1-R — Procedures Governing the Activities of DoD Intelligence Components (you certify compliance at the battalion level; a collection conduct violation at this rank is a Commander's inquiry, not a security manager's inquiry).
• —MCO 5354.1 — Marine Corps SAPR Program; MCO 1000.9 — Equal Opportunity (you enforce both in a unit where many billets are individually controlled and the command climate is harder to read from outside the section).
• —The Commandant's Reading List and current Marine Corps Intelligence doctrine updates (you are expected to consume IC and MAGTF intelligence doctrine and translate the changes down to boot 2621 collectors).

• —SNCO Academy Senior Course graduate; Sergeants Major Course (USMC SgtMaj Academy at Marine Corps University, Camp Geiger) before competing for command SgtMaj or regimental SgtMaj slate.
• —Company UCMJ rate, retention rate, and TS/SCI clearance maintenance rate in the top tier of the battalion — the BSgtMaj reports against every peer 1stSgt, and a Radio Battalion with clearance incidents is a readiness crisis, not an HR problem.
• —Personal FitRep profile that the reporting senior can defend at HQMC — the bar at this rank is whether your rated GySgts get selected for 1stSgt and MSgt.
• —Zero senior-enlisted-level integrity incidents — financial, OPSEC, collection conduct, IIR attribution, fraternization. One ends the career permanently at this rank and the IC relationships the Radio Battalion built over decades do not recover quickly.
• —Post-service transition plan running 24-36 months out — VA disability claim filed pre-EAS, federal civilian SIGINT career path (NSA GS-12/13, DIA, NGA) identified, no retirement walked into cold.

• —Going public with disagreement with the CO on collection guidance or IC relationships. You take the disagreement in his office — about mission gaps, IC commitment over-reach, manning shortfalls — with the door closed; you walk out aligned, every time.
• —Confusing seniority with IC credibility. The Radio Battalion keeps senior enlisted who can speak honestly about what the collection mission can and cannot deliver, not the ones who over-represent the section's capability to keep the intelligence officer happy.
• —Stopping personal PT because you are "too senior." The Radio Battalion is still a Marine infantry-capable unit that deploys, and the 1stSgt who cannot hump with the formation in a contingency operation sends a message to the boot 2621 that the physical standard is negotiable.
• —Letting a GySgt run a bad IIR quality standard or a bad TS/SCI program because he is your guy. The IC quality reviewer finds it, the battalion S-2 brief includes it, and the next FitRep slate is read without your name in the right place.
• —Treating the GS-12/13 transition as a retirement plan the unit manages for you. The federal civilian application is yours to manage — the NSA billet pipeline gets your name in front of the right people, but the resume, the clearance transfer, and the application are on you.

The good 2621 1stSgt / SgtMaj is the senior Marine every junior collector in the Radio Battalion knows by reputation before they ever see him in formation. He is the reason the re-enlistment rate holds on a hard deployment cycle where the collection mission never stopped and the section SNCOs were carrying the floor on six hours of sleep. The CO trusts him with the hardest news at 0200; the ICs trust him when he says the section can execute the requirement. The good MGySgt is the Marine the MMPB calls when the 2621 MOS roadmap needs to account for what the IC actually needs from Marine SIGINT operators versus what was written when the schoolhouse was last updated — and the section chiefs across the Radio Battalions quote his IIR quality standards without realizing they learned them from his section NCOICs.