passive defense officer

passive electronically scanned array (PESA) / passive phased array

field officer (field-grade officer / senior officer)

passive air defense

passive defense measure

passive antimissile defense

passive defense

Senior Air Defense Officer (SADO)

ABC-defense officer

radiological defense officer

heat passive homing guidance system

image-intensifying Passive Driving Periscope (PDP)

passive

passive armor

passive counterintelligence measures

passive deception measures

passive defence

passive defenseequipment

passive defenses

passive detector

passive deterrents

passive electronic countermeasures

passive electronic protective measures

passive flight

passive homing

passive homing system

passive jamming

passive muzzle brake

passive obstacle

passive public information policy

passive sonar

passive-tracking monitoring station

personal passive protection equipment