– Commander, Naval Security Group COMPACFLT – Commander, Pacific Fleet (formerly CINCPACFLT) COMPATRECONGRU – Commander, Patrol and Reconnaissance Group COMPATRECONWING – Commander, Patrol and Reconnaissance Wing COMPTUEX – Composite Training Unit Exercise COMSEC – Communications Security COMSUBFOR – Commander, Submarine Forces COMSUBLANT – Commander, Submarine Force Atlantic COMSUBPAC – Commander, Submarine Force, U.S. Pacific Fleet COMTACGRU – Commander, Tactical Air Control Group COMTRAWING – Commander, Training Air Wing CORTRAMID – Career Orientation and Training for Midshipmen COS (also CoS) – Flag Officer's Chief of Staff CPO – Chief Petty Officer CPOM – Chief Petty Officer's Mess CR – Construction Recruit CRG – Coastal Riverine Group CS – Culinary Specialist CSADD – Coalition of Sailors Against Destructive Decisions CSC – Combat Systems Coordinator CSC – Command Senior Chief CSC – Culinary Specialist Chief (E-7) CSEC – Computerized Self Evaluation Checklist CSMC – Combat Systems Maintenance Center CSOOW – Combat Systems Officer of the Watch CSOSS – Combat Systems Operational Sequencing Systems CT – Cryptologic Technician CTA – Cryptologic Technician, Administrative (now-defunct, merged with yeoman) CTI – Cryptologic Technician, Interpretive CTM – Cryptologic Technician, Maintenance CTN – Cryptologic Technician, Networks CTO – Cryptologic Technician, Communications CTR – Cryptologic Technician, Collection CTT – Cryptologic Technician, Technical CV – Aircraft Carrier, class/type of ship CVA – Aircraft Carrier, Attack, class/type of ship CVAN – Aircraft Carrier, Attack, Nuclear, class/type of ship CVN – Aircraft Carrier, Nuclear, class/type of ship CVW – Carrier Air Wing CWO – Chief Warrant Officer D • D1-R – 3M periodicity code or a shower (slang for daily, once, or as required) DAPA – Drug and Alcohol Programs Advisor DC – Damage Controlman DC – Dental Corps DCA – Damage Control Assistant DCAG – Deputy Air Wing Commander (see CAG) DCC – Damage Control Central DCO – Damage Control Officer (Chief Engineer) or Direct Commission Officer DCPO – Damage Control Petty Officer DD – Destroyer DDG – Guided Missile Destroyer DDR – Radar Picket Destroyer DE – Destroyer Escort DESDIV – Destroyer Division DESRON – Destroyer Squadron DEVGRU – Naval Special Warfare Development Group, formerly (and informally still) SEAL Team SIX DFM – Diesel Fuel Marine (F-76), standard Navy bunker fuel DILLIGAF – Does It Look Like I Give A Flip(uck), standard Navy slang DIRNSA – Director of the National Security Agency DL – Destroyer Leader (outdated) DLG – Guided Missile Destroyer Leader (outdated) DLGN – Nuclear-powered Guided Missile Destroyer