- BUD/S - Basic Underwater Demolitions/SEAL training
- Comm - The equipment that SEALs use to communicate with each other in the field.
- CO - Commanding Officer
- DEVGRU - The United States Naval Special Warfare Development Group (NSWDG), formerly SEAL Team Six
- DoD - Department of Defense
- DZ - Drop zone, the targeted area for parachutists.
- HALO - High altitude, low opening jump from an aircraft.
- HVT - High value target
- IED - Improvised Incendiary 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
- 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.