 CONT: When they all leave the bank and get on the bus. Gabriel says  "No one wants a repeat of what happened this morning. Keep your  distance. Clear the airspace for five miles." Ok, so how can the big  helicopter get in that restricted airspace, then get to the freeway  to pick up the bus without been intercepted? Even if it was parked  on top of a building 7 blocks from the bank before the bank  robbery/hostage incident took place, as soon as it took off, LAPD  helicopters would order it out of the area, by force if they had to.