first impression report (FIR) (post exercise)

post exercise discussion report

flight information region (FIR)

first fire mixture / first-fire mixture

impression of firing pin

firing-pin impression

first aid post

exercise analysis report

final exercise report

command post exercise (CPX)

field and command post exercise

logistical command post exercise

post exercise action

aiming post lamp / aiming post light

credible first strike capability

first aid facility

first aid kit

first echelon maintenance

first echelon medical equipment maintenance

first hand information

first lieutenant = (брит.) lieutenant

first light

first responder (emergencies)

first response

first response unit

First Sergeant (1SGT)

first watch

first-aid skills

first-line reserve

first lights

Petty Officer First Class (PO1)

Private First Class (PFC)

Sergeant First Class (SFC)