The Ask An Expert lecture series at the Steven F. Udvar-Hazy Center is presented every 2nd and 4th Thursday at 12:30 PM. A Museum staff member talks to the public about the history, collection, or personalities related to a specific artifact or exhibition in the Museum. On May 29, 1951, Capt. Charles F. Blair flew Excalibur III from Norway across the North Pole to Alaska in a record-setting 10 1/2 hours. The airplane is on display at the National Air and Space Museum's Steven F. Udvar-Hazy Center. How to attend