I've seen the velocity they (rc jets) can reach; don't give them any ideas.
I like the idea about the foot, but take it a notch further.... think Hollywood n Vine, or Polk street in SanFran, or even Mister Garrison.... Nuff said.
Anyways, you're right there, Hyped; a reaction is what they want. But they're more after getting some mentally handicapped fool into blowing themselves up for the belief of martyrdom (source; report on Fox News). Seems that if you threaten to take away their 'hopes' of immortality via the oinker, it takes away their most precious resource; willing human beings. Simply fight fire with fire, and use their whacked out version of Islam against them.
Besides, you just can't take a non-reactive stance. Doing so only gets more people killed, as the terrorists will see that it's an easy target. The only real course of action is to seal up the security hole that they exploited to attack in the first place, so it won't happen again. And to be pro-active, to catch them BEFORE they can kill dozens (GB), hundreds (Bali), or thousands (NYC).
Okay, that overloaded my brain for the day, lol...