Keywords: 2nd USA Science and Engineering Festival 120427-N-PO203-040.jpg en Chris Hansen technical director for SeaPerch watches as visitors to the Office of Naval Research exhibit maneuver the SeaPerch underwater robot during the 2nd USA Science Engineering Festival at the Walter E Washington Convention Center U S Navy photo by John F Williams <br>Unit Defense Imagery Management Operations Center 2012-04-27 John Williams https //www dvidshub net/image/582419/2nd-usa-science-and-engineering-festival 120427-N-PO203-040 2012-05-17 13 39 WASHINGTON DC US PD-USGov-Military-Navy Office of Naval Research Images from DoD uploaded by Fæ |