Questions mount over why person was on runway

Investigators still searching for answers about how and why a trespasser breached the tarmac perimeter at Denver International before being fatally struck by a departing plane. According to the airport, a pedestrian jumped the perimeter fence and was hit just 2 minutes later while crossing the runway. The airline said smoke was reported in the cabin and the pilots aborted takeoff.Airport officials say pilots deployed emergency slides to evacuate the plane. Both the FAA and TSA say they're investigating how ...