CROSSFIELD, Albert Scott with Edward Cokely and Charles Feltz Published on October 1, 2012 in Albert Scott Crossfield, Jr. (2 October 1921–19 April 2006)Full resolution (980 × 793) ← Previous Next → Scott Crossfield discusses the X-15 with North American Aviation engineers Edmond R. Cokeley, Director of Flight Test, and Charles H. Feltz, Chief Engineer for the X-15 Program.