AQ: Al-Qaeda
ARU: armed response unit
CO: commanding officer
DEVGRU: United States Special Warfare Development Group (SEAL Team 6)
DOD: US Department of Defense
EST: Eastern Standard Time
HE: high-explosive
HEI: high-explosive incendiary
HESCO: flat-packed containers filled with dirt or sand to create a protective barrier
ICOM: intelligence communication
IED: improvised explosive device
JPC: jumpable plate carrier
klick: kilometre
L Detachment: a territorial unit attached to 22 SAS, under the command of E Squadron
LZ: landing zone
MIT: murder investigation team
MRAP: mine-resistant ambush-protected vehicle
MRE: meal, ready to eat
OC: officer commanding
PIRA: Provisional IRA
plate hanger: armoured operations (ops) vest
PTSD: post-traumatic stress disorder
REME: Royal Electrical and Mechanical Engineers
RTU: order to return to unit
RV: rendezvous
SOCO: scene of crime officer
SOP: standard operating procedure
SUV: sport utility vehicle
UAV: unmanned aerial vehicle