Dr. Heather Wilson takes the oath of office as the 24th Secretary of the Air Force
Air Force Chief of Staff Gen. David L. Goldfein congratulates Secretary of the Air Force Heather Wilson during her ceremonial oath, making her the 24th secretary during a Pentagon event, May 16, 2017. Secretary of Defense Jim Mattis delivered the oath during the ceremony. (U.S. Air Force photo/Scott M. Ash)