180208-N-AW702-003 JACKSONVILLE, Fla. (Feb. 8, 2018) Lt. Cmdr. Jason Hwang, a family medicine physician on Naval Hospital Jacksonville’s Medical Home Port Red Team, checks a sailor’s lungs during a general exam. The Navy Medical Corps celebrates its 147th birthday on March 3. Navy physicians serve from the sea to the battlefield, all the way to the halls of Congress and the White House. They serve in the aviation and undersea medical communities, and as astronauts exploring the frontiers of space. (U.S. Navy photo by Jacob Sippel/Released).