So have you heard about the air traffic controller at New York's Kennedy airport that brought his kid to work? Well this ATC employee didn't just bring his son to work he let him do a little work. Apparently the kid was on the radio communicating with pilots and giving them directions such as they were clear for take-off.
On the recording of the incident that I heard none of the pilots questioned why a kid was giving them instructions. They seem to take it in stride which tells me that maybe this isn't the first time an unauthorized person has been in the control tower working flights.
So what if some terrorist hacked into the ATC communications system? Would the pilots not question them and just take direction then too?