BO - Basic Orientation (BUD/S)

BUD/S - Basic Underwater Demolitions/SEAL training

Comm - The equipment that SEALs use to communicate with each other in the field.

CO - Commanding Officer

CTT - Combat Training Tank

DEVGRU - The United States Naval Special Warfare Development Group (NSWDG), formerly SEAL Team Six

DoD - Department of Defense

DOR - Drop on Request

DZ - Drop zone, the targeted area for parachutists.

HALO - High altitude, low opening jump from an aircraft.

HVT - High value target

IBS - Inflatable Boat, Small

IED - Improvised Explosive Device

Klicks - Shortened word for kilometers.

LRRP - Long-range reconnaissance patrol.

LT - Nickname for lieutenant.

LZ - Landing Zone where aircraft can land.

Merc - Mercenary - guns for hire.

MWD - Military Working Dog

MRE - Meals, Ready-to-Eat, portable in pouches and packed with calories, these packaged meals are used in the field.

NATO - North Atlantic Treaty Organization

NCIS - Naval Criminal Investigative Service

NWU - Navy Working Uniform

OIC - Officer in Charge

REACT - Regional Enforcement Action Capabilities Team

RIB - Rigid Inflatable Boat

RPG - Rocket Propelled Grenade

R&R - Rest and Relaxation

Tango -Hostile combatants.

SERE -Stands for survival, evasion, resistance, escape. The principles of avoiding the enemy in the field.

Six - Military speak for watching a man’s back.

SO - Special Operator

SPIES - Special Patrol Insertion & Extraction System

UDT - Underwater Demolitions Team