INFORMAL CHAT Defense Secretary Ash Carter speaks with airmen working as aircraft maintainers during a visit to Nellis Air Force Base, Nev., Aug. 26, 2015. Carter spoke with Airman and observed a Red Flag Exercise. SHARE IMAGE: Download Image: Full Size (1.06 MB) Tags: Carter , nellis afb, All images, Defense Secretary , SecDef Photo By: DoD photo by U.S. Air Force Master Sgt. Adrian Cadiz VIRIN: 150826-D-DT527-444.JPG Photo Gallery