Chiefs are pinned at Naval Medical Center San Diego.

100916-N-6320H-002 
SAN DIEGO (Sept. 16, 2010) Chief petty officer combination covers sit on charge books during a chief petty officer pinning ceremony at Naval Medical Center San Diego. (U.S. Navy photo by Mass Communication Specialist 1st Class Todd Hack/Released)

100916-N-6320H-002 
 SAN DIEGO (Sept. 16, 2010) Chief petty officer combination covers sit on charge books during a chief petty officer pinning ceremony at Naval Medical Center San Diego. (U.S. Navy photo by Mass Communication Specialist 1st Class Todd Hack/Released)