JACKSONVILLE, Fla. (Jan. 12, 2017) – Hospital Corpsman 3rd Class Joshua Lazenby, a respiratory technician at Naval Hospital (NH) Jacksonville’s Internal Medicine, administers a pulmonary function test to Joy Davis. A pulmonary function test measures how well the lungs add oxygen and remove carbon dioxide from the blood. February is American Heart Month; spread the word about stopping this deadly disease and encourage people to live heart-healthy lives. ( Navy photo by Jacob Sippel, Naval Hospital Jacksonville Public Affairs/Released).

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