Denver runway tragedy after man trespasses onto active taxiway as Frontier jet departs

A 41-year-old man identified as Michael Mott was killed after trespassing onto a runway at Denver International Airport and was struck by a Frontier Airlines plane taking off, an act authorities classify as suicide; the incident triggered an engine fire and a passenger evacuation, with 12 minor injuries and five hospitalizations reported. Perimeter security and how trespassers access runways are longstanding concerns, and the NTSB said it is gathering information for a potential investigation depending on injury criteria while Frontier declined to comment.