Forty years after Apollo 13, the Smithsonian's National Air and Space Museum welcomed Apollo 13 mission commander Jim Lovell, lunar module pilot Fred Haise, Apollo 16 command module pilot Ken Mattingly, and mission controller Gene Kranz for a panel discussion about that historic mission. The lecture was presented April 15, 2010 at the National Air and Space Museum, with Director John R. Dailey and Senator John H. Glenn, astronaut and first American to orbit the Earth, providing introductions.