160916-N-KF478-986 CORPUS CHRISTI, Texas (Sept. 16, 2016) Chief Gunner's Mate (Surface Warfare) Jonathon W. Stewart, a native of Kansas City, Missouri assigned to Naval Health Clinic Corpus, with his wife after donning his combination cover for the first time during a chief petty officer (CPO) pinning ceremony Sept. 16, at Naval Air Station Corpus Christi Wings Auditorium. The rate of CPO is that of a senior non-commissioned officer, and was established on April 1, 1893, for the United States Navy. CPOs serve a dual role as both technical experts and as leaders. (U.S. Navy photo by Bill W. Love)