A recent NOTAM hereabouts disclosed that a UAV 17' long with a 22' wingspan was lurking about at heights up to 700' AGL.
The computer can take care of the flying and the GPS can pinpoint delivery. Takeoff can be done from a deserted parking lot at night.
But that's too much work compared to loading up a car with explosives.
And the jihadis are not about to knock off their best recruiters; so, the occupants of 10 Downing St and the WH have no worries
