Tetra, I would start here,
UFOMind.com and see if it turns up any other stories. I do recall reading a few people,
with varying degrees of detail of their flight.
As for being intercepted and escorted. I am sure if you penetrated restricted airspace, the controlling ATC facility would immediately inform you. As
for interception, I would guess a few minutes. Then again, if that were the case with 9/11...but that's another topic.