PACIFIC OCEAN (Nov. 26, 2015) Quartermaster 3rd Class Craig Warner uses a sextant on the bridge wing of Whidbey Island-class dock landing ship USS Rushmore (LSD 47) in preparation for an underway replenishment with Lewis and Clark-class dry cargo ship USNS Washington Chambers (T-AKE 11) . Rushmore is part of the Essex Amphibious Ready Group and, with the embarked 15th Marine Expeditionary Unit (15th MEU), is currently operating in the U.S. 7th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Chelsea Troy Milburn/Released)