David Gravseth, an engineer from SSC Atlantic, controls an unmanned aerial vehicle for visitors at the SPAWAR booth during the "Sneak Peak" Expo event for the USA Science and Engineering Festival, April 27, 2012 at the Washington, D.C. Convention Center. The Expo is the culminating event for the USA Science and Engineering Festival with over 3,000 exhibitors and six stages with performances.
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WASHINGTON, DC, US
This work, SPAWAR activities at USA Science and Engineering Festival [Image 1 of 2], by Ashley Nekoui, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.