Vice Adm. Matthew L. Nathan, left, surgeon general of the Navy and chief of the Navy's Bureau of Medicine and Surgery, speaks during a change of command ceremony at Naval Medical Center San Diego as Rear Adm. Bruce L. Gillingham, center, commander of Navy Medicine West, Capt. Jose A. Acosta, and Chaplain Capt. Alan M. Hansen look on. Acosta officially assumed command of the medical center as part of a command realignment focus in Navy Medicine. (U.S. Navy photo by Mass Communication Specialist 1st Class Todd J. Hack/Released)
<br>Unit: Navy Media Content Services
Petty Officer 1st Class Todd Hack
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