We all know to be at the gate before they start boarding your flight, right?
Recently I was waiting for a connecting flight in Atlanta. The flight before mine called for final boarding several times, and called for certain folks to hurry to the gate. About 10 minutes later the door was closed and the gate personnel left.
Six people came walking up, probably those who's names had been called. One decided why wait? She hit the bar on the door, the alarms went off, then the door opened and she walked thru. The rest of the folks just stood there. The alarm did not stop, but continued to sound for some time. Uniformed people started to appear. Finally the desk personnel came back.
The five or so folks asked if they could get on the plane, as it seemed obvious it was either still there, or had returned to the gate. They were allowed on, but the woman who had set off the alarm was brought back to the gate area by several uniformed individuals, some TSA, some police, others plain clothes. She was detained and questioned in the gate area for some time. At one point a dog sniffed her belongings.
She did not seem to understand what was happening, and I was not close enough to hear what was being said. She was still there when my flight was boarded an hour or so later.
It was actually something different to watch at an airport. If you are ever that late for your flight, do not open that door!