A Delta Air Lines jet takes off from Detroit Metropolitan Airport, one of the airline's hubs, in Romulus, Mich., on Friday, July 22, 2011. (AP Photo/Carlos Osorio)
**FILE** Passengers on Northwest Airlines Flight 253 were evacuated after arriving at Detroit Metropolitan Airport from Amsterdam on Christmas Day in 2009. Officials accused a Nigerian aboard, identified as Umar Farouk Abdulmutallab, of trying to ignite an explosive device in his underwear. Northwest merged with Delta Air Lines in 2008. (Associated Press)
FILE - In this April 8, 2005, file photo, New York Islanders general manager Mike Milbury leaves after an NHL hockey general managers meeting at the Detroit Metropolitan Airport in Romulus, Mich. A spokesman for former Boston Bruins player and coach Milbury said on Friday, Dec. 23, 2011, that his client won't face criminal charges for a confrontation he had with a 12-year-old boy after a youth hockey game. (AP Photo/Paul Sancya, File)
President Obama tries to get a high-five from a young boy after arriving at Detroit Metropolitan Airport in Romulus, Mich., on Monday, Sept. 5, 2011. (AP Photo/Duane Burleson)
A Delta Air Lines jet takes off from Detroit Metropolitan Wayne County Airport, one of the airline's hubs, in Romulus, Mich., on Friday, July 22, 2011. (AP Photo/Carlos Osorio)
** FILE ** Passengers walk past a Delta Air Lines Boeing 747 at the Detroit Metropolitan Wayne County Airport, one of Delta's hubs, in Romulus, Mich., in January 2010. (AP Photo/Paul Sancya, File)
**FILE** Passengers on Northwest Airlines Flight 253 were evacuated after arriving at Detroit Metropolitan Airport from Amsterdam on Christmas Day in 2009. Officials accused a Nigerian aboard, identified as Umar Farouk Abdulmutallab, of trying to ignite an explosive device in his underwear. Northwest merged with Delta Air Lines in 2008. (Associated Press)
