Navy Cmdr. Matthew Chapman, commanding officer of the Gold crew of the USS Alabama, embraces his family at Naval Base Kitsap-Bangor, Wash., Sept. 6, 2016, upon the ballistic-missile submarine’s return from a routine strategic deterrent patrol. Alabama is one of the base’s eight ballistic-missile submarines, which provide the most survivable leg of the U.S. strategic deterrence triad. Navy photo by Petty Officer 1st Class Amanda R. Gray