US Navy (USN) Admiral (ADM) Vern Clark (left), CHIEF of Naval Operations (CNO), looks on as Lieutenant Junior Grade (LTJG) David Martinez demonstrates flightdeck operating procedures on the "Ouija board" in Flight Deck Control aboard the USN Nimitz Class Aircraft Carrier USS JOHN C. STENNIS (CVN 74). The "Ouija board" is a miniature of the carriers flightdeck allowing Operations to see, continuously, where all their assets are located on the flightdeck