U.S. Air Force MSgt John Seymour assigned to the 158FW, Vermont Air National Guard, South Burlington, VT, carries a fuel hose to an F-16. U.S. Air Force MSgt John Seymour assigned to the 158FW, Vermont Air National Guard, South Burlington, VT, carries a fuel hose to an F-16. Seymour is responsible for refueling the F-16s as part of Operation Snowbird at Davis-Monthan Air Force Base, Tucson, AZ, January 20, 2010. (U.S. Air Force photo by A1C Sarah Mattison/Released) an F-16 as part of Operation Snowbird at Davis-Monthan Air Force Base