KEYPORT, Wash. (Dec. 18, 2015) – Lt. Mark Cook, a Navy chaplain, delivers the benediction during a change of command ceremony for the Gold crew of the Ohio-class ballistic-missile submarine USS Nevada (SSBN 733). Cmdr. Gene Severtson, from Spring Lake Park, Minn., properly relieved Cmdr. Chad Hennings, from Chicago, during the ceremony held at the Naval Undersea Museum. (U.S. Navy photo by Mass Communication Specialist 2nd Class Amanda R. Gray/Released)