Oxygen, and Ejection Seats), Aviation Mechanical Exception AMH – Aviation Structural Mechanic – Hydraulics AMMRL – Aviation Maintenance Material Readiness List AMO – Assistant Maintenance Officer AMS – Aviation Structural Mechanic – Structures AN – Airman AO – Auxiliary, Fleet Oil, class/type of ship; Aviation Ordnanceman AOE – Auxiliary, Oil, Explosives, class/type of ship. AOR – Auxiliary, Oil, Replenishment, class/type of ship AOW – Auxiliaryman of the Watch API – Aviation Preflight Indoctrination AR – Auxiliary, Repair, class/type of ship. A repair ship AR – Airman Recruit (E-1) ARRS – Afloat Readiness Reporting System ARS – Auxiliary, Repair and Salvage, class/type of ship AS – Auxiliary, Submarine Tender, class/type of ship AS – Aviation Support Equipment Technician ASAU – Air Search and Attack Unit ASR – Auxiliary, Submarine Rescue, class/type of ship ASUW – Anti-Surface Warfare ASVAB – Armed Services Vocational Aptitude Battery ASW – Auxiliary Seawater system ASW – Anti-Submarine Warfare ASWO – Anti-Submarine Warfare Officer AT – Annual Training (U.S. Navy Reserve, type of active duty orders, typically less than 30 days) AT – Aviation Electronics Technician ATS – Auxiliary, Towing and Salvage, class/type of ship AUTEC – Atlantic Undersea Test and Evaluation Center AUXO – Auxiliaries Officer AVCM – Master Chief Avionics Technician AVGAS – Aviation Gasoline AWCS – Assistant Work Center Supervisor AZ – Aviation Maintenance Administrationman B B/N – Bombardier/Navigator; NFO in A-3B Skywarrior, A-5A Vigilante and A-6 Intruder attack aircraft (no longer used) BAM – Bad Ass Marine ("Broad Ass Marine" if used in reference to a female) BB – Battleship BCD – Bad Conduct Discharge (also colloquially known as "Big Chicken Dinner") BCGs – Birth Control Glasses BCM – Beyond Capable Maintenance. Equipment status that indicates the item cannot be repaired and must be sent out for rework or disposed. BEQ – Bachelor Enlisted Quarters BESS – Basic Enlisted Submarine School BJOQ – Blue Jacket of the Quarter BJOY – Blue Jacket of the Year BLUF – Bottom Line Up Front BM – Boatswain's Mate BMOW – Boatswain's Mate of the Watch BOHICA – Bend Over Here It Comes Again BOL – BUPERS Online BT – Boiler Technician BU – Builder BUDS – Basic Underwater Demolition School BUMED – Bureau of Medicine and Surgery BUPERS – Bureau of Naval Personnel BUSANDA – Bureau of Supplies and Accounts BUWEPS – Bureau of Naval Weapons BZ – Bravo Zulu (meaning well done) C CA –