high-level reconnaissance drone

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

surveyor's level (surveying level, tbc)

counter reconnaissance / counter-reconnaissance

High Level Planning Group (OSCE HLPG)

High Level Steering Group

high-level strategic guidance

high level pressure chart

high-level aerodrome

high-level radiation

high-level combat

high-level signal

drone reconnaissance aircraft

battlefield reconnaissance drone

drone reconnaissance

independently-guided reconnaissance drone

IR reconnaissance drone

reconnaissance drone

strategic reconnaissance drone

high altitude-high opening (HAHO)

high pay-off target / high-payoff target (HPT)

high-burst / high burst (HB)

high road; high-road

high-power illuminator radar / high power illuminating radar (HIPIR)

high-performance / high performance

high-altitude drone

high-performance drone

drone war (world’s first drone war)

drone field of view (drone FOV)

drone swarm attack / drone swarming attack

drone swarm's counter-drone capabilities

hobby drone (hobby grade drone)

one-way attack drone (OWA drone)