SAN FRANCISCO — Video from the helmet camera of a firefighter responding to the crash landing of an Asiana Airlines flight in San Francisco shows at least one rescuer was aware someone was on the ground outside the aircraft and even warned a colleague. Yet two fire trucks subsequently ran over an injured passenger.

The video, first aired by CBS News on Tuesday, shows the girl, 16-year-old Ye Meng Yuan, lying in the grass before she was struck, according to an attorney for her family. A coroner concluded she was alive at the time and died when she was later hit by a fire truck.

In the video, a firefighter with a helmet camera tells the driver of a fire truck that there’s a person in front of him. A fire truck-mounted camera shows a firefighter directing the truck away from the person.

What’s not clear from the video is why rescuers didn’t try to move or clearly mark the presence of the person on the ground during the chaotic aftermath of the July 6 crash at San Francisco International Airport.

Shortly after the crash, rescue officials confirmed that one of the victims was run over by a fire truck.