Navy Airman Otis Miller performs pre-checks on a S-3 Viking during Exercise Roving Sands '97 at Roswell, N.M., on April 20, 1997. More than 20,000 service members from all branches of the armed forces of the U.S., Canada, Germany, and the Netherlands are participating in Exercise Roving Sands '97. The exercise is designed to refine their skills in operations using an integrated air defense network of ground, missile and radar early warning systems combined with tactical fighter and bomber aircraft operating in a simulated high-threat environment. Miller is a Navy Aviation Storekeeper attached to Air Anti-Submarine Squadron 35, Naval Air Station North Island, San Diego, Calif.