** FILE ** In this Wednesday, Aug. 1, 2012, photo, Delta Air Lines gate agent, right, hands the pilot paperwork as a ramp agent prepares to push the airplane back from the gate at JFK International airport in New York. (AP Photo/Mary Altaffer)

Photo by: Mary Altaffer

** FILE ** In this Wednesday, Aug. 1, 2012, photo, Delta Air Lines gate agent, right, hands the pilot paperwork as a ramp agent prepares to push the airplane back from the gate at JFK International airport in New York. (AP Photo/Mary Altaffer)