Capt. Richard Brennan, 187th Fighter Wing fighter pilot, shows Gen. David L. Goldfein, Chief of Staff of the Air Force, the improved avionics systems in the wing's F-16 Fighting Falcon Aircraft July 19, 2016 at the Montgomery Regional Air National Guard Base. Goldfein visited the wing to learn about the wing's mission, meet Airmen, and thank them for their service. (U.S. Air National Guard photo by Staff Sgt. Jared Rand)