high altitude-low opening (HALO)

high-altitude low-opening parachute technique (HALO)

high altitude-high opening (HAHO)

high- and low-altitude surveillance

surveillance, high- and low-altitude surveillance

halo jump

halo

halo effect

halo phenomenon

low altitude parachute extraction system (LAPES)

subsonic low altitude cruise missile

airborne targeting low altitude navigation thermal imaging and cueing (system)

low altitude arrival waypoint

low-altitude departure waypoint

low-altitude course (to the target etc.)

low altitude radio altimeter

low-altitude safety

low-altitude drive on ground

low-altitude pursuit drive on ground

Low Altitude Authorization and Notification Capability (LAANC)

low altitude unmanned research aircraft

low altitude/airspeed unmanned aircraft

Low Altitude Authorization and Notification Capability system (LAANCs)

low-altitude drone

low-altitude photoreconnaissance drone

low-altitude unmanned aerial vehicle

low-RCS target / low-radar-cross-section target

low flying aircraft / low-flying aircraft

low-flying, low-speed drone

high altitude

high-altitude long-endurance (HALE)

high-altitude nuclear burst

theater high altitude air defense (THAAD) system