surveillance and intrusion device

safety and arming device / safety-and-arming device

surveillance, high- and low-altitude surveillance

cryptographic intrusion

buried line intrusion sensor

line intrusion sensor

air intrusion

intrusion

anti-intrusion system

electromagnetic intrusion

surveillance, under surveillance

airborne surveillance device

ground surveillance device

surveillance device

electronic surveillance device

air intake device / air-intake device

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

chemical, biological, radiological and nuclear surveillance

high- and low-altitude surveillance

intelligence, surveillance, and reconnaissance (ISR)

joint surveillance and targeting attack radar system (JSTARS)

reconnaissance and surveillance assets

reconnaissance and surveillance missions

reconnaissance, surveillance, and target acquisition (RSTA)

special surveillance and reconnaissance

surveillance and attack system

surveillance and reconnaissance

Unmanned Carrier Launched Airborne Surveillance and Strike System (UCLASS)

intelligence, surveillance, target acquisition, and reconnaissance (ISTAR)

surveillance and target acquisition plan (STAP)

acquisition and surveillance radar

Base Expeditionary Targeting and Surveillance Systems - Combined

communication, navigation and surveillance