190709-N-DZ398-0223 ATLANTIC OCEAN (July 9, 2019) Sailors assigned to the operations department aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75) test the operability of an AN/SLQ-25A, or NIXIE, on the ship's fantail. Harry S. Truman is underway conducting composite training unit exercise with the Harry S. Truman Carrier Strike Group. (U.S. Navy photo by Mass Communication Specialist Seaman Donovan M. Jarrett/Released)