Naval Health Clinic Quantico’s chief petty officers, backed by their fellow sailors, stand at attention for the celebration of 120 years of the naval rank of chief petty officer on the clinic’s quarterdeck April 1, 2013. - Naval Health Clinic Quantico’s chief petty officers, backed by their fellow sailors, stand at attention for the celebration of 120 years of the naval rank of chief petty officer on the clinic’s quarterdeck April 1, 2013.