President Bill Clinton is greeted by Secretary of the Air Force Sheila Widnall. President Bill Clinton (left) is greeted by Secretary of the Air Force Sheila Widnall (right), and Secretary of Defense William S. Cohen (center) as he arrives at the Pentagon on Sept. 18, 1997. Clinton is taking part in the celebration of the 50th anniversary of the U.S. Air Force. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 162583-V-SZE68-396.jpg Photo Gallery