NASA Administrator Charles Bolden, seated right, and Johann-Dietrich Worner, Chairman of the Executive Board, German Aerospace Center (DLR), participate in a ''Masters with Masters'' event, Wednesday, Dec. 8, 2010, at NASA Headquarters in Washington. Bolden and Worner reflected on their experiences, lessons learned and thoughts pertaining to international collaboration during the program. Photo Credit: (NASA/Paul E. Alers)
