Excellent response Charles.
A few years ago, Obie was stumping in Seattle for money (as he does every time he comes here). A couple from Eastern WA were flying back to Seattle in their float plane and landed in Lake Washington. Apparently this violated AF1's air space, even though it had been on the ground for hours, and fighters were scrambled.
Mchord AFB is 40 miles south of me. Whidby Island Naval Airbase is 40 miles north. Where did the fighters come from? Portland Oregon.
So in order to get here in a timely manner, they went supersonic. The problem is, the couple had half their gear in their car before the support arrived.
The ensuing 'boom' had people freaked out and actually shut down all 911 service in Pierce County (Tacoma).
I work about 5 miles from Boeing Field (where AF1 stays) and I heard two booms as well (there were 2 fighters). It's obviously a rolling boom as Tacoma is 20 miles south.
My question is, when does the booming stop?
If these fighters were still supersonic while on top of AF1, they overshot their target by 50 miles.
If yer a pilot and ya break the barrier, then slam on the brakes, does the wave wash back over you?