161220-N-TV230-367 PACIFIC OCEAN (Dec. 20, 2016) Ensign Margaret Graves scans the horizon in the pilot house of the aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt is conducting exercises in the U.S. 3rd Fleet area of operations at the conclusion of its six month planned incremental availability. (U.S. Navy photo by Seaman Bill M. Sanders/Released)Dec. 20, 2016) Ensign Margaret Graves scans the horizon in the pilot house of the aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt is conducting exercises in the U.S. 3rd Fleet area of operations at the conclusion of its six month planned incremental availability. (U.S. Navy photo by Seaman Bill M. Sanders/Released)