acoustic detecting apparatus

target detecting device (TDD)

automatically cued target detecting system

weapon detecting device

portable decontaminating apparatus

scuba (Self-Contained Underwater Breathing Apparatus)

self-contained breathing apparatus (SCBA)

boresight apparatus

undercover apparatus

undercover international apparatus

hose breathing apparatus

intelligence apparatus

time-interval apparatus

fresh-air hose breathing apparatus

oxygen-breathing apparatus

water-recovery apparatus

autonomous breathing apparatus

dew-point apparatus

simplified electronic tracking apparatus

fog-dispersal apparatus

self-contained open-circuit breathing apparatus

address apparatus

wet sand-blasting apparatus

acoustic beam

acoustic bullets

acoustic countermeasures

acoustic field

acoustic homing torpedo

acoustic impact

acoustic intelligence

acoustic mine-hunting

acoustic sensor

acoustic target-sensor