Passengers on the Frontier flight that hit a person broke a key rule of airline evacuations

A Frontier Airlines plane at Denver International Airport. Al Drago/Getty Images A Frontier Airlines plane struck a person on the runway at Denver Airport on Friday. Videos show passengers ignoring crew instructions to leave their bags on board. It's the latest case of passengers delaying an evacuation by taking their luggage with them. Some Frontier Airlines passengers gave a good reminder of one of the key safety rules if you're ever evacuated from a plane: leave your luggage behind. Late...