Grunt Speak
Swimmer
Coast Guard
Definition
A Coast Guard rescue swimmer. These are the people who jump out of helicopters into raging seas to save your life. Possibly the most objectively badass job in any military branch. Don't tell the SEALs.
Example Usage
"The swimmer dove into 20-foot swells in the dark to pull a family off a sinking vessel. Puddle pirate, my entire rear."