I was on a flight from Australia. The flight attendants started acting strange, and, about an hour and a half after we were scheduled to land, the pilot came on and told us what happened. At the time I thought it was strange that he wasn't more vague, because people on the flight got nervous and started crying and many tried unsuccessfully to call relatives on their cell phones etc. In retrospect, I'm guessing he told us what happened because he wanted us to be ready in case somebody tried something on our flight.
We were scheduled for a stop-over at LAX where, I think, two of the flights were headed, so the airport was completely shut down, but we were low on fuel after the flight from Australia.
The let us land, but we were held up outside of the terminal as Police, FBI and ATF agents surrounded the plane and checked things out before we could get off.
They had buses to take us from the plane to the terminal where we walked between lines of agents armed with machine guns and wearing body armor.
We ended up in the parking lot completely confused and disoriented. The airline sent vans to take us to hotels. I was stuck there until the 14th. I went to the airport about six hours before the flight, and it took nearly that long to get through the mess. I don’t know if anyone remembers, but there were reports at that time that several people were stopped in New York with box cutters, so we thought there might be more attacks coming.