> That's a good question, what happens with an anti-air missile if it fails to hit something in the sky? Does it disable itself before hitting ground? Even if

> That's a good question, what happens with an anti-air missile if it fails to hit something in the sky? Does it disable itself before hitting ground? Even if a warhead isn't armed, a heavy missile moving very fast hitting a heavy building moving very slowly makes for a lot of impact energy. Unspent fuel (solid or otherwise) will also readily start secondary fires and be dangerous for rescuers and emergency crews.