STE Day - Past Speakers 2013 Keynote Speaker: Tim Harris Director of Applied Physics and Instrumentation Group HHMI Janelia Farm Research Campus 2012 Speakers: Michael Walker Cybersecurity Expert Raytheon 2012 Keynote Speaker: Frank L. Culbertson, Jr. Former NASA Astronaut Senior Vice President and Deputy General Manager of Orbital’s Advanced Programs Group 2011 Keynote Speaker: Dr. Robert D. Ballard Explorer and Oceanographer National Geographic