U.S. Air Force Chief of Staff Gen. Mark A. Welsh III, answers questions from Airmen during an all call at Langley Air Force Base, Va., April 28, 2015. During the three-day visit, Welsh and his wife Betty toured various units across Langley to gain a better understanding of the needs of active duty and Air National Guard Airmen and their families. (U.S. Air Force photo by Staff Sgt. Teresa J. Cleveland/Released)