The National Air and Space Society's 2013 winter lecture: Caution and Boldness: Balancing Risk in Spaceflight. Panelists from left, Dr. June Scobee Rodgers, widow of Richard "Dick" Scobee, STS-41-C, STS-51-L and Founding Chair, Challenger Center. Alan Ladwig, Deputy Associate Administrator for NASA Public Outreach. TK Mattingly, astronaut, Apollo 16, STS-4 and STS-51-C. Dr. Steven J. Dick, astronomer, author and historian of science. The lecture was hosted by Roger Launius at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, VA.