Naval Aerospace Medicine Institute (NAMI) Physical Examinations Leading Petty Officer Hospital Corpsman 1st Class (FMF) Omar Gonzalez takes notes during a Navy Medicine Operational Training Center (NMOTC)-led CPO 365 Phase 1 training evolution Jan. 23 aboard Naval Air Station Pensacola, Fla. Gonzalez, along with other 1st Class Petty Officers throughout the Navy are participating in CPO 365, a Master Chief Petty Officer of the Navy initiative designed to provide consequential career development to produce new Chief Petty Officers through challenging mental and physical activities.