The Navy League's Sea-Air-Space Exposition is the largest maritime expo in the U.S., and brings together dozens of defense contractors and military decision-makers. The Motley Fool's Rex Moore was at the event in National Harbor, Maryland, and saw demonstrations of several technologies. In the video below, Jay McConville of Lockheed-Martin (LMT 1.09%) shows off some of the company's unmanned aircraft technology.
