NORAD: There's no way our anti-missile and anti-air would hit one of our planes by mistake. We're a professional military!

FAA: Iran had a professional military too. And the Soviets and Russians too, and its happened there.

NORAD: Fuck you.

FAA: We're grounding to keep people safe, the military industrial complex is out of control, dangerous, and a threat to American well being.

I side with the FAA. Military systems are extremely dangerous around civilians and the kool-aid the military drinks in terms of their effectiveness and safety doesn't often mesh with reality. The military runs killing machines and when those machines are active its best to get people out of the way. There are no safe killing machines.