WSJ - JFK Security Breach Causes Delays:
The security breach, which occurred before 3:30 p.m., involved a passenger who had gotten off a flight from Orlando in Kennedy's Terminal 8, according to Steve Coleman, a press officer for the Port Authority of New York and New Jersey, which operates the airport. The man opened a door that was supposed to be used only by airport workers and walked through. He was captured by security cameras, Mr. Coleman said, but was not found and is presumed to have found a way out of the terminal.
The Transportation Security Administration said its agents and Port Authority police were searching for man.
All travelers at Kennedy's Terminal 8, which was closed from about 4 p.m. to about 6 p.m., had to leave the terminal so they could be re-screened. Terminal 8 handles both domestic and international flights for American Airlines. A spokesman for the airline, Charley Wilson, said some flights were delayed.