Constructionman 2nd Class Josua Powers, from Las Vegas, NV, takes up a defensive position during a Seabee Engineering Reconnaisance Team (SERT) mission, during Exercise Tandem Thrust '01. Petty Officer Powers is stationed at Underwater Construction Team Two (UCT-2) Port Hueneme, CA. Exercise Tandem Thrust 2001 is a combined United States, Australian and Canadian military training exercise. U.S. Navy Photo by Photographer's Mate 1st Class Eric J. Tilford.