Geophysical association cohosted this event. Good evening. Im david ferriero. Its a thrill to welcome you here. Whether youre here in the room with us or participating through facebook or youtube. And a special welcome to our cspan audience. Im pleased you could join us for tonights Program Small steps and giant leaps how apollo 11 shaped our understanding of earth and beyond. Tonights program is presented in parer inship with the American Geophysical union. Its made possible in part by the National Archives foundation through the generous support of the boeing company. We thank them for our support. For the next four days we are commemorating the 50th anniversary of the historic flight of apollo 11 and the first moon landing. Tomorrow night, well screen the recent celebrated documentary apollo 11 draft frd newly discovered video and audio recordings here at the National Archives. Following the film, bill barry will moderate a discussion with director todd douglas miller, thomas peters