The National Transportation Safety Board on Sunday said it is gathering information about the evacuation of a Frontier Airlines plane after it hit and killed a person on the runway at Denver International Airport during takeoff. The plane, on route from Denver to Los Angeles International Airport, “reported striking a pedestrian during takeoff at DEN at approximately 11:19 p.m. on Friday,” according to a post on the airport’s official X account. Passengers were evacuated via slides, and the emergency crew bused them to the terminal. An airport spokesperson said 12 passengers suffered minor injuries and five were taken to hospitals. The spokesperson did not provide details on how the passengers were injured. But some people on board expressed concern about the evacuation, including being stuck in the plane for several minutes as smoke filled the cabin and left on the tarmac in the cold once they were out.…