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KUSA - The FAA is investigating a Harlem Shake video shot by Colorado College students onboard a Frontier flight.

The students were flying from Colorado Springs to San Diego when they decided to do their version of the viral dance in the aisles.

A sophomore says he asked a flight attendant for permission beforehand.

An FAA spokesman said Thursday they're looking at what phase the flight was in during the dance in the aisles.

Frontier Airlines says the seat-belt sign was off and safety measures were followed.