DirectorsPaul F. Bikle, Hugh L. Dryden, and Walter C. Williams stand in front of the recently repaired and modified X-15A-2 that later flew to Mach 6.7 on 3 Oct. 1967.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/directors-2/Copy URL to clipboard> DownloadShareSize1041x833px