Gunner's Mate A-School

Eleven weeks of learning every weapon system the Navy puts on a ship, from .50-cal machine guns to missile launchers. GM A-School covers ordnance handling, weapons maintenance, and magazine operations — the stuff that goes boom on purpose. The attention to detail is non-negotiable because ordnance doesn't give second chances. GMs are the sailors who make the ship dangerous to the enemy instead of just to its own crew.