Canadian navy Vice Adm. Drew Robertson, chief of the Maritime Staff, listens to U.S. Navy Lt. Cmdr. Rich Jarrett explain features of the hangar bay aboard the littoral combat ship USS Freedom (LCS 1), during a tour of the ships spaces Nov. 21, 2008, in the St. Lawrence River. Freedom is the first of two littoral combat ships designed to operate in shallow water environments to counter threats in coastal regions. (U.S. Navy photo by Mass Communication 2nd Class Specialist Kenneth R. Hendrix/Released)