In this undated photo released by the U.S. Navy, the Port-side bow of the Los Angeles class nuclear-powered fast attack submarine USS Hartford (SSN 768) is seen anchored off the U.S. Naval Academy, in Annapolis, Md.

Photo by: Don S. Montgomery

In this undated photo released by the U.S. Navy, the Port-side bow of the Los Angeles class nuclear-powered fast attack submarine USS Hartford (SSN 768) is seen anchored off the U.S. Naval Academy, in Annapolis, Md.