U.S. Air Force Staff Sergeant Cary Heath (back), Staff Sergeant John Johnson (middle), and Airman 1st Class Victor Williams, 136th Maintenance Squadron, Guidance and Control shop, Texas Air National Guard, operationally check a C-130 Hercules flight director, at Naval Air Station Fort Worth Joint Reserve Base, Texas, June 21, 2014. Heath, Johnson, and Williams perform an operation checks on a mock-up flight director and auto pilot system stand to ensure proper function of critical components after repairs have been carried out. (Air National Guard photos by Master Sgt. Charles Hatton/Released)