F-16's assigned to the Texas Air National Guard's 149th Fighter Wing at Lackland Air Force Base, Texas, fly alongside a KC-135 assigned to the Iowa Air National Guard's 185th Air Refueling Wing, on March 6, 2010. (U.S. Air Force photo by Tech. Sgt. Rene Castillo)(U.S. Air Force photo by Tech. Sgt. Rene Castillo/Released)