Naval War College Foundation Chairman John D'Luhy, left, and Navy Rear Adm. Jacob L. Shuford, Naval War College president, presents the Distinguished Graduate Leadership Award to Vice Chairman of the Joint Chiefs of Staff Marine Gen. James Cartwright, center, during a dinner April 24, 2008, at the Navy Yard in Washington, D.C. Defense Dept. photo by Air Force Tech. Sgt. Adam M. Stump

A Super Puma Helicopter transports supplies to the flight deck of the nuclear-powered aircraft carrier USS Nimitz during a vertical replenishment while the guided-missile destroyer USS John Paul Jones steams into position in the Pacific Ocean, April 19, 2008. U.S. Navy photo by Seaman John Wagner

Colombian military naval officials brief participants of the 75th Joint Civilian Orientation Conference at Colombian Coast Guard Headquarters during a cultural visit to Cartagena, Colombia, April 23, 2008. Sponsored by the secretary of defense, JCOC is reserved for American leaders interested in expanding their knowledge of the military and national defense. Defense Dept. photo by U.S. Air Force Master Sgt. Kevin J. Gruenwald

Participants of the 75th Joint Civilian Orientation Conference tour downtown Cartagena during a cultural visit to Colombia, April 23, 2008. Sponsored by the secretary of defense, JCOC is reserved for American leaders interested in expanding their knowledge of the military and national defense. Defense Dept. photo by U.S. Air Force Master Sgt. Kevin J. Gruenwald

Colombian naval hands who cleaned the ship's deck await a visit from participants of the 75th Joint Civilian Orientation Conference in Cartagena, Colombia, April 23, 2008. Sponsored by the secretary of defense, JCOC is reserved for American leaders interested in expanding their knowledge of the military and national defense. Defense Dept. photo by U.S. Air Force Master Sgt. Kevin J. Gruenwald

Participants from the 75th Joint Civilian Orientation Conference tour Colombian military naval surface ships during a cultural visit in Cartagena, Colombia, April 23, 2008. Defense Dept. photo by U.S. Air Force Master Sgt. Kevin J. Gruenwald

Members of the Wounded Warrior Project's Soldier Ride ride along the South Lawn drive at the White House April 24, 2008, during the kick off of the annual "Soldier Ride: White House to Lighthouse Challenge" bike ride. White House photo by Joyce N. Boghosian

An Iraqi army soldier prepares to go on a dismounted patrol to secure the streets in the Tharwa 1 neighborhood in the southern portion of Baghdad's Sadr City district, April 14, 2008. U.S. Air Force photo by Tech. Sgt. Adrian Cadiz