I watch a lot of that flyin' stuff on the tube, some time ago they had a segment on the future of flight; went into the work being done on mini-size spyplanes.
Quite scary, if neat from a tech standpoint. Little dudes hardly bigger than your hand, powered by a tiny electric motor and a couple of lithium batteries, and capable of carrying a CCD camera and transmitter.
The guy was saying that they were thinking bug-sized machines, literally hardly larger than a large dragonfly. Hear that buzz- might be big brother....
Imagine a hand-sized flying machine with a CCD camera, the body of which is sheet C4.... quite the assasination weapon.