170404-N-XL056-018 PACIFIC OCEAN (April 4, 2017) Deputy Secretary of Defense Robert Work, left, meets with Capt. Kevin P. Lenox, commanding officer of the aircraft carrier USS Nimitz (CVN 68), during a visit aboard the ship. Nimitz is underway conducting a composite training unit exercise (COMPTUEX) with the Nimitz Carrier Strike Group in preparation for an upcoming deployment. COMPTUEX tests a carrier strike group's mission-readiness and ability to perform as an integrated unit through simulated real-world scenarios. (U.S. Navy photo by Mass Communication Specialist Seaman Leon Wong/Released)