** FILE ** Self-service check in kiosks sit in the new Delta airlines terminal 4 at JFK airport, Friday, May 24, 2013, in New York. (AP Photo/Mary Altaffer)
President Barack Obama steps off Air Force One upon his arrival, Monday, Sept. 24, 2012, at JFK airport in New York. (AP Photo/Pablo Martinez Monsivais)
President Obama reaches over to greet a supporters on the tarmac Sept. 24, 2012, upon his arrival on Air Force One at JFK airport in New York. (Associated Press)