A U.S. Air Force F-16 assigned to the 149th Fighter Wing, Texas Air National Guard, painted with World War II heritage markings is parked outside the Air National Guard Paint Facility in Sioux City, Iowa on May 26, 2017. The 149th FW received authorization for the nonstandard markings in order to commemorate the United States Air Force 70th Anniversary. The markings represent the lineage of the 149th FW with the unit’s origins dating back to the 396th Fighter Squadron “Thunder Bums” P-47 paint scheme from 1944. U.S. Air National Guard Photo by: Master Sgt. Vincent De Groot 185th ARW PA/Released