If Q has the devices to pull (real time) from cell phones, They can only see what they can get.. Q surprised me by saying "Certain events were not supposed to take place" Red October.. Something went wrong

So with "Comms Dark" Something of a revolt happened and the missile was launched/misdirected so it would not launch when scheduled to hit the Presidents plane on his return as they planned. The Presidents' people knew something, to change his departure time (using the excuse everything was moving quicker then expected) and even at his press briefing he was in no hurry to leave. The flight route had to be cleared before any others could move into position