190925-N-NH199-1052 PACIFIC OCEAN (Sept 25, 2019) Sailors assigned to the Military Sealift Command hospital ship USNS Mercy (T-AH 19) prepare a mock patient for a X-ray in casualty receiving during a medical readiness exercise. Mercy is currently operating off the coast of San Diego for Mercy Exercise 19-4 (MERCEX). Mercy is one of two hospital ships owned and operated by Military Sealift Command. Mercy conducts operations in the Pacific area of responsibility under the guidance of U.S. Pacific Command and Commander Pacific Fleet. (U.S. Navy photo by Mass Communication Specialist 3rd Class Harley K. Sarmiento/Released)