"All of a sudden, a SWAT team went through and saying, `Please place your hands on the seat in front of you,"' Duggan said, adding that police had three dogs with them.
American Airlines passenger Steven Ciobo said nothing seemed amiss on the flight to New York until he saw police lights on the runway after the plane landed. He said airline workers told passengers to remain seated and that the authorities would meet the plane, and everyone was quiet as air marshals got on board and headed for the back.
"To be honest, I think it's reassuring that there was such a great response from the authorities," Ciobo said. "If there are people that are stupid enough to do those things on today of all days you wonder what's going on through their heads. But the fact that there were so many authorities there ... and that it all went so smoothly, I think they did a good job."
The jets intercepted the flight about 100 miles west of New York and shadowed it until it landed, Cornelio said.
American Airlines is a subsidiary of AMR Corp. Frontier is a subsidiary of Republic Airways Holdings Inc.