One the Navy planes the president uses to communicate if there's a nuclear war was damaged while...

A Navy plane was being towed out of a hangar last week when its tail clipped the top of the structure, leading to what could amount to millions of dollars in repairs.

An E-6B Mercury, a nuclear command-and-control aircraft, was being moved at Tinker Air Force Base, Oklahoma, on Thursday as part of its daily operations when the vertical stabilizer at the rear of the aircraft struck the hangar, said Lt. Travis Callaghan, a spokesman for Naval Air Forces.

The incident has been labeled a Class-A mishap by the Naval Safety Center, meaning the damages to the aircraft likely total at least $2 million.

One person was aboard the Mercury at the time of the mishap, Callaghan said. It's standard to have a "brake rider" on board any time an aircraft is towed out of a hangar, he added.