Promotional videos released this week by major Western defense contractors simulate their weapon systems attacking enemy warships, with the Chinese Navy—the world's largest by hull count—depicted as the notional target, according to a military observer. BAE Systems, Inc., the United States subsidiary of London-based BAE Systems plc, advertised its containerized Adaptable Deck Launching System, or ADL, capable of firing missiles, while Maryland-headquartered Lockheed Martin marketed its Long