Investigators from the NTSB arrived at Newark Liberty International Airport on Monday after a near catastrophe over the weekend.
Several issues have led to delays and cancellations for about a week, and those disruptions were happening again Monday morning.
Theresa Claiborne had her final flight with United Airlines on Thursday.
A fight started between a United Airlines worker and former NFL player Brendan Langley, apparently over a wheelchair.
TSA Officer Cecilia Morales heard people screaming for help and knew she had to act quickly, saying "my training and experience just took over."
The cars caught fire on the top deck of the Terminal C parking lot early Thursday morning.
