A Russian Naval Honor Guard welcomes U.S. Navy. Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, to St. Petersburg, Russia, May 6, 2011. A Russian Naval Honor Guard welcomes U.S. Navy. Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, to St. Petersburg, Russia, May 6, 2011. SHARE: Download: Full Size (4.53 MB) Tags: Photo Essays Credit: VIRIN: 220581-Z-RQK70-906.jpg Photo Gallery