This proves it, if you know anything about the numbers they use. And there were several cities in the US attacked today, I wouldn’t be surprised if there were 7 of them. This is what proves it.
 1. happened at 7;33 PT   15;33 GMT  both add up to a single number of 7
 2.7 cars were hit on freeway.
 3.77 passengers
 4.7 crew members on board.

33 considered a master number. they love to use 7s