high-altitude low-opening parachute technique (HALO)

high altitude-low opening (HALO)

high altitude-high opening (HAHO)

low altitude parachute extraction system (LAPES)

high- and low-altitude surveillance

surveillance, high- and low-altitude surveillance

halo jump

halo

halo effect

halo phenomenon

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