U.S. Air Force Gen. Janet C. Wolfenbarger, commander of Air Force Materiel Commander, is greeted by Gen. Mike Hostage, commander of Air Combat Command, at Langley Air Force Base, Va., April 9, 2014. Wolfenbarger visited with Airmen assigned to the 735th Supply Chain Operations Group. Wolfenbarger is the first female four-star general in the Air Force. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)

U.S. Air Force Gen. Janet C. Wolfenbarger, commander of Air Force Materiel Command, speaks to Airmen during a visit to Langley Air Force Base, Va., April 9, 2014. Wolfenbarger, the first female four-star general in the Air Force, spent the day visiting Airmen assigned to the 735th Supply Chain Operations Group. (U.S. Air Force photo by Airman 1st Class Kimberly Nagle/Released)

U.S. Air Force Gen. Janet C. Wolfenbarger, commander of Air Force Materiel Command, speaks to Airmen during a commander’s call at Langley Air Force Base, Va., April 9, 2014. Wolfenbarger, the first female four-star general in the Air Force, spent the day visiting with Airmen assigned to the 735th Supply Chain Operations Group. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)