1) Army attack helicopters 2) Asp and ringhals 3) Asps 4) Certain Army helicopters 5) Charmed snakes 6) Fearsome snakes 7) Hooded attackers 8) Hooded creatures 9) Hooded snakes 10) Indian strikers 11) King serpents 12) Missile-carrying helicopters 13) Mongoose targets 14) Snakes 15) Snakes in the hood Found on https://www.crosswordclues.com/clue/cobras