Denver airport security initially missed trespasser who was killed by plane on runway

Denver airport workersl initially missed a security breach by a 41-year-old man who scaled an 8-foot perimeter fence and crossed a runway where he was hit and killed by a plane. Authorities said Tuesday that the man was intending to end his own life when he entered the airport and crossed a runway as a Frontier Airlines plane attempted to take off. The medical examiner said no note was immediately recovered. The collision sparked an engine fire, and the plane was evacuated after the cabin filled...