190919-N-SE292-0004 SAN DIEGO (Sept. 19, 2019) Lt. Alex Tcholokov, left, an anti-submarine warfare/surface warfare (ASW/SUW) tactics instructor assigned to the Sea Combat Division of the Naval Surface and Mine Warfighting Development Center (SMWDC), observes the performance of Lt. j.g. John Martin, one of 10 students completing the advanced anti-submarine warfare officer (ASWO) course. SMWDC and Center for Surface Combat Systems (CSCS) host ASWO students for hands-on training inside of CSCS’s Combined Integrated Air & Missile Defense/Anti-Submarine Warfare Trainer. (U.S. Navy photo by Clinton Beaird/Released)