A U.S. Air Force F-15A model takes on for its final flight on September 16, 2009, from the Portland Air National Guard Base. Aircraft 77-098 is the last F-15A model in the Active Air Force inventory and is being flown to retirement by Lt. Col. Steve Beauchamp as he leaves for the Aerospace Maintenance and Regeneration Center at Davis-Monthan Air Force Base in Tucson, Ariz.Photo by Staff Sgt. John Hughel