Unruly Passenger Aboard Frontier Flight Bashes Window and Is Subdued

Chaos erupted aboard a Frontier Airlines flight from Denver to Houston this week when a man started bashing a window and several seats around him, prompting other passengers to subdue him with shoelaces and zip ties until the plane landed.The struggle, captured on videos and photos taken by passengers, began about 40 minutes into Flight 4856 on Tuesday night.The plane had reached its cruising altitude of 35,000 feet when the man broke the window’s inner pane and its plastic frame, a case of air rage that an F.B.I.spokesman confirmed on Saturday was being investigated by the bureau.So far, the man, whose name was not released by the authorities, has not been charged with a crime.

It was not clear what led to his outburst.The flight did not have an air marshal, prompting the crew to ask if anyone aboard had experience in law enforcement or the military, according to passengers on the flight....