New us air force UAV made to kill russian s-400 air defence The General Atomics Avenger (formerly Predator C) is a developmental unmanned combat air .br New us air force UAV made to kill russian s-400 air defence The General Atomics Avenger (formerly Predator C) is a developmental unmanned combat air .br New us air force UAV made to kill russian s-400 air defence The General Atomics Avenger (formerly Predator C) is a developmental unmanned combat air .br US Air force STEALTH UAV armed with LASER GUN to kill S-400 defence New us air force UAV made to kill russian s-400 air defence The General Atomics .