200630-N-NX635-1073 NORTH CHICAGO, Ill. (June. 30, 2020) Capt. Thomas Nelson, prospective commanding officer of Navy Medicine Readiness and Training Command Great Lakes (NMRTC), relieves Capt. Gregory Thier, commanding officer of NMRTC, during a change of command ceremony at Captain James A. Lovell Federal Healthcare Center (FHCC). NMRTC Great Lakes is the Navy command within Lovell FHCC and is the first-of-its-kind, and only, health care center that integrates Department of Defense and Veterans Affairs medical care into a single combined mission. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Caylen J. McCutcheon/Released)