FSA – Food Service Attendant FSO – Food Service Officer FT – Fire control technician FTB – Fire Control Technician Ballistic Missile FTM – Fire Control Technician Missiles FTN – Forget the Navy (polite form) FTN – Full-time Navy (humorous form) FTS – Full-time Support (full-time, active-duty personnel in U.S. Navy Reserve) G GCCS-M – Global Command and Control System-Maritime GM – Gunner's Mate GQ – General Quarters (Call to battle stations) GS – Guided Missileman GSA – General Services Administration GSE- Gas Turbine Systems Technician – Electrical GSM- Gas Turbine Systems Technician – Mechanic H HA – Hospital Apprentice HAC – Helicopter Aircraft Commander HEDSUPPACTLANT – Headquarters, Support Activity Atlantic HELO – Helicopter HM – Hospital Corpsman HMFIC – Head Mother Fucker In Charge (See SOPA Below) HN – Hospitalman HR – Hospital Recruit HS – Helicopter Squadron, Anti-Submarine Warfare (HS-4 Black Knights) HT – Hull Maintenance Technician I IAMM – Individual Augmentation Manpower Management IAP – In Assignment Processing IAW – In Accordance With IC – Interior Communications Electrician ICO – In Case Of (or In Care Of / In Concern Of) IHO – Industrial Hygiene Officer IMF – Intermediate Maintenance Facility IMRL – Individual Material Readiness List INCOM– Incoming IOIC - Integrated Operational Intelligence Center IP – Irish Pennant – A loose thread of a Naval or Marine uniform. IRT – In Reference To IT – Information System Technician ITS – Information Technology Submarines J JAG – Judge Advocate General's Corps, U.S. Navy JBD – Jet Blast Deflector (on board carriers) JHSV – Joint High Speed Vessel JO – Journalist (obsolete), Junior Officer JOPA – Junior Officer Protection Association JP-5 – Jet Propellant no. 5, standard Navy jet fuel (F-44, AVCAT) JTF – Joint Task Force JTFEX – Joint Task Force Exercise K KISS – Keep It Simple, Stupid L LANTCOM – Atlantic Command LAWS – Laser Weapon System LCAC – Landing Craft, Air Cushion. LCC – Amphibious Command Ship. LCDR – Lieutenant Commander LCPO – Leading Chief Petty Officer LCM – Landing Craft, Mechanized, class/type of boat. Usage: LCM-4, LCM-6, LCM-8 LCPL – Landing Craft, Personnel Launch, class/type of boat. LCS – Littoral Combat Ship, class/type of ship. LCVP – Landing Craft, Vehicle, Personnel, class/type of boat. LDO – Limited Duty Officer LES – Leave and Earnings Statement LHA – Landing, Helicopter, Assault, class/type of ship. LHD – Landing, Helicopter, Dock, class/type of ship. LKA –