Orb-3 Antares Mishap Press Conference

William Gerstenmaier, associate administrator of NASA's Human Exploration and Operations Mission Directorate, participates via phone, in a press conference with Rachel Kraft, NASA public affairs officer, seated left, Frank Culbertson, Executive Vice President and General Manager of Advanced Program Group at Orbital Sciences Corp., center, and Bill Wrobel, director of NASA's Wallops Flight Facility, after a mishap occurred during the launch of the Antares rocket, with the Cygnus cargo spacecraft