I was 1.5 years into my airline job, sitting sideways as a 727 second officer, on a flight between MCI and ORD. I was a 2nd Officer Line Check Airman and was giving a new guy a checkout. We got a few odd messages from the crew scheduler on our ACARS unit, and thought there had been a power failure in the North East US.
Landed in ORD, and nothing was moving. That was when we knew something very unusual was happening. Sat on the tarmac a few hours. I tuned in a news broadcast on the radio, and literally gave the passengers a play by play for 90 minutes. I remember walking back through the cabin to check on the pax, and a women stopped me and said "my brother works in the twin towers.".
After a few hours, we were able to get permission to drop the rear stairway of the 727, and off-load everyone. Once I was inside Ops, people were in shock. I recall the staff ladies crying, and the pilots watching the TV. I figured out where my hotel was, and headed out of O'Hare.
What was very eerie was going through that tunnel between the two United terminals: middle of at the day, and I'm the only person in it. Came up to the main ticket area of O'Hare, and the only other people there were National Guard with automatic weapons. Surreal.
Spent 5 days in Chicago, and was on the first plane that went into San Antonio.
I had decided 6 weeks earlier to go back onto Active Duty, and return to the U-2. I'd also called the U-2 SQ/CC at that time, and he supported my decision. I had completed all of the paperwork for AFPC, and that stack was sitting on my desk at home when I left to fly that trip on 10 Sept. Once I arrived back home, I waited about 2 days, and made the 15 minute drive out to AFPC at Randolph, and hand-walked my Return to Active Duty application in to Adriana Bazan. Couldn't wait to get back in uniform.
I was back on Active Duty on 19 Nov 2001.