NASA's Commercial Cargo Providers: Are They Ready to Supply the Space Station in the Post-Shuttle Era?

Mr. William Gerstenmaier, Associate Administrator, Space Operations Mission Directorate, National Aeronautics and Space Administration

Ms. Cristina Chaplain, Director, Acquisition and Sourcing Management, U.S. Government Accountability Office

Ms. Gwynne Shotwell, President, Space Exploration Technologies

Mr. Frank Culbertson, Jr., Senior Vice President and Deputy General Manager, Advanced Programs Group, Orbital Sciences Corporation