"If they're on my airplane, they're going to either sit down and fasten their seat belt, or I'm going to find a policeman to help them do it."

Tilmon, Wallace and Shook all raised the prospect of air turbulence, which airplanes can encounter without warning.

"That airplance can just flop all over the place, just suddenly," Tilmon said. "Once you have gone into that kind of turbulent air, your body becomes some kind of missile. It's not just you, it's who you are going to hit and injure as you go flying through the cabin."

A Harlem Shake dance could also be used by terrorists to divert a crew's attention, the experts said.

"I think a federal air marshal might find that a bit confusing," Wallace said.

"You don't know what every person's intentions are," said Shook, the flight attendant.

The pilots said it was unlikely the dancing would upset a large aircraft's stability. "It depends on the airplane, the larger the airplane, the less the impact," Tilmon said.

Team members do not plan a repeat performance, saying sequels are never as good as original performances.