The U.S. Navy commssioned a new attack submarine yesterday, the U.S.S. Virginia. It is the "the lead ship of its latest class of fast-attack submarines specifically designed for post-Cold War security threats. The $2.2 billion, nuclear-powered USS Virginia differs from other submarines because it can not only roam the deep blue ocean but also get close to shore in shallow water, which Navy officials say is important in fighting terrorism." Very cool. Read on.