190712-N-AW702-0003 JACKSONVILLE, Fla. (July 12, 2019) Lt. Robert Scherl, right, from Minden, Nev., an emergency medicine physician assistant at Naval Hospital Jacksonville’s emergency department, performs a musculoskeletal exam on retired Air Force Tech. Sgt. Charles Jones. Medical Service Corps officers have continuously served sailors and Marines, in times of war and peace, since Aug. 4, 1947. (U.S. Navy photo by Mass Communication Specialist 1st Class Jacob Sippel/Released).