Commandant of the Marine Corps, Gen James F. Amos, explains the importance of the Corps’ noncommissioned officers during an informal seminar aboard Marine Corps Air Station Miramar, Calif., Oct. 17. Amos said, “NCOs, you are the opportunity. You are the Corps’ main effort.” - Commandant of the Marine Corps, Gen James F. Amos, explains the importance of the Corps’ noncommissioned officers during an informal seminar aboard Marine Corps Air Station Miramar, Calif., Oct. 17. Amos said, “NCOs, you are the opportunity. You are the Corps’ main effort.”