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Honorary Chief Hospital Corpsman Bill Cosby delivers remarks during his pinning ceremony at the U.S. Navy Memorial in Washington, D.C. February 17, 2011 (Credit: U.S. Navy / Mass Communication Specialist 2nd Class Jay M. Chu)

Honorary Chief Hospital Corpsman Bill Cosby delivers remarks during his pinning ceremony at the U.S. Navy Memorial in Washington, D.C. February 17, 2011 (Credit: U.S. Navy / Mass Communication Specialist 2nd Class Jay M. Chu)