Originally Posted by
N227UA
They have staffs checking boarding pass for passengers heading to Concourse A to ensure no one departing from Main Terminal would get on the train. In case the accident happens, passenger would be escorted by a staff back to Main Terminal from Concourse A.
I personally experienced that!
I didn't know that you can't get back to the main terminal if you hop on to the train. I was personally escorted back to the main terminal after slipping through the BP check!
