170411-N-JH929-0020 PACIFIC OCEAN (April 11, 2017) U.S. Navy Aviation Boatswain’s Mate (Equipment) Airman Juan Castiblanco, left, a native of Columbia, and U.S. Navy Aviation Boatswain's Mate (Equipment) 1st Class Brian Robinson, a native of Shreyeport, La., monitor catapult operations aboard the aircraft carrier USS Nimitz (CVN 68), April 11, 2017, in the Pacific Ocean. Nimitz is currently underway conducting 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 U.S. Navy Mass Communication Specialist Seaman Cole Schroeder/Released)