U.S. Marines march in perfect formation during Pass in Review of the evening parade at the Marine Barracks Washington, D.C., June 27, 2008. Defense Secretary Robert M. Gates was the guest of honor for the event. U.S. Marines march in perfect formation during Pass in Review of the evening parade at the Marine Barracks Washington, D.C., June 27, 2008. Defense Secretary Robert M. Gates was the guest of honor for the event. SHARE IMAGE: Download Image: Full Size (7.21 MB) Tags: Photo Essays Photo By: VIRIN: 291774-L-FWE48-352.jpg Photo Gallery