LWF — lightweight fighter
LZ — landing zone
MAAG — Military Assistance Advisory Group
MACV — military assistance commander, Vietnam
MARHUK — Marine hunter-killer
MASH — mobile army surgical hospital
MATS — Military Air Transport Service
MC — multichannel
MP — Military Police
MPQ — radar-controlled bombing system
MSO — minesweeper, ocean
MSR — main supply route
NAS — Naval Air Station
NATO — North Atlantic Treaty Organization
NATOPS — Naval Air Training and Operating Procedures Standardization
NAVFOR — naval forces
NCA — National Command Authority
NHF — Naval Historical Foundation
NOB — Naval Operating Base
NOD — night observation device
NROTC — Naval Reserve Officer Training Corps
NSA — National Security Agency
NSC — National Security Council
NTDS — naval tactical data system
NVA — North Vietnamese Army
NVN — North Vietnam
NWC — Naval War College
NWIP — Naval Warfare Informational Publication
NWP — Naval Warfare Publication
O&M — Operations and Maintenance
OMB — Office of Management and Budget
OpCon — Operational Control
OPDEP — operations deputy
OpNav — Office of the Chief of Naval Operations
OpSec — operations security
ORE — operational readiness evaluation
ORI — operational readiness inspection
OSD — Office of the Secretary of Defense
PA&E — program analyses and evaluation
PCF — patrol craft (fast)
PCO — prospective commanding officer
POW — prisoner of war
PRC — People’s Republic of China
PSI — pounds per square inch
PT — motor torpedo boat
PX — post exchange
QDR — Quadrennial Defense Review
R&R — rest and relaxation
RAF — Royal Air Force
RDF — radio direction finder
RDT&E — research, development, testing, and evaluation
recce — reconnaissance
RIO — radar intercept officer
ROE — Rules of Engagement
ROK — Republic of Korea
ROKAF — Republic of Korea air force
ROTC — Reserve Officers’ Training Corps
rpm — revolutions per minute
RTAFB — Royal Thai Air Force Base
RVN — Republic of Vietnam
SAC — Strategic Air Command
SAM — surface-to-air missile
SAR — search and rescue
SCRAM — emergency shutdown of a nuclear reactor
SEATO — Southeast Asia Treaty Organization
SecDef — secretary of defense
SecNav — secretary of the Navy
shp — shaft horsepower
SLEP — Service Life Extension Program
SOF — Special Operations Force(s)
SOP — standard operating procedure
SPACE A — space available
SpecOps — special operations
SSBN — ballistic missile submarine, nuclear
TAC — Tactical Air Control
TACC — Tactical Air Control Center
TACP — Tactical Air Control Party
TADC — Tactical Air Direction Center
TBM — Grumman Avenger torpedo bomber
TBS — talk between ships radio
TF — task force
TG — task group
TNT — trinitrotoluene
TOT — time on target
TWA — Trans World Airlines
UCLA — University of California, Los Angeles
UHF — ultra high frequency
UK — United Kingdom
UN — United Nations
UnRep — underway replenishment
UPI — United Press International
URG — underway replenishment group
US — United States
USAF — U.S. Air Force
USMACV — U.S. Military Assistance Command, Vietnam
USMC — U.S. Marine Corps
USN — U.S. Navy
USNR — U.S. Naval Reserve
USO — United Service Organization
USSR — Union of Soviet Socialist Republics
UUV — unmanned undersea vehicle
V/STOL — vertical/short takeoff and landing aircraft
VA — attack squadron
VB — bombing squadron
VCNO — Vice Chief of Naval Operations
VERTREP — vertical replenishment
VF — fighter squadron
VHF — very high frequency
VIP — very important person
WSAG — Washington Special Actions Group
XO — executive officer