** FILE ** In this file photo taken June 7, 2010, a Delta Airlines Inc. plane sits on the tarmac at Seattle-Tacoma International Airport in Seattle. Delta Air Lines reversed a second-quarter loss with with what it said Monday, July 19, is its largest quarterly profit in a decade thanks to strong passenger revenue. (AP Photo/Ted S. Warren, File)

Photo by: Ted S. Warren

** FILE ** In this file photo taken June 7, 2010, a Delta Airlines Inc. plane sits on the tarmac at Seattle-Tacoma International Airport in Seattle. Delta Air Lines reversed a second-quarter loss with with what it said Monday, July 19, is its largest quarterly profit in a decade thanks to strong passenger revenue. (AP Photo/Ted S. Warren, File)