Navy Capt. Andrew Vaughn, outgoing commander for Naval Medical Research Unit-San Antonio reads his orders relinquishing command at the NAMRU-SA change of command ceremony at Brooke Army Medical Center, Joint Base San Antonio-Fort Sam Houston, Texas May 21, 2021. Vaughn leaves the command to retire after serving 30 years in the Navy.

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Keywords: change, command, commander, medical, navy, research