exit? >> pay attention to what the flight attendant says, no matter how many times you fly. every plane is different. take a look around, the nearest exit may be behind you. look for a second exit. that exit may be blocked. count the number of rows between where you're sitting and that exit either before or behind you so if the aircraft is dark, if you can't see what's going on because of smoke, you can count seat backs. when you're flying in an airplane wearing cotton clothing, not polyester. if there's a fire, cotton won't melt, polyester might. wear long pants, long sleeved shirt. be aware of your surroundings. under no circumstances get your pocket bag or laptop bag. >> what happens to other aircraft. flights are coming in right after, one after the other. what immediately happens to stop them. all these flights had to be diverted. how do they do that? >> control tower will start