sigma_7_3_prepared_for_flight_in_hangar_sIn September 1963, engineers and technicians in Hangar S, prepare Wally Schirra's Mercury 8 capsule named "Sigma 7." The spacecraft soon would be transported to Launch Pad 14 to be mated to the Atlas launch vehicle.Image Credit: NASA Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/sigma_7_3_prepared_for_flight_in_hangar_s/Copy URL to clipboard> DownloadShareTagsWebMod GrandfatheredImage CreditNASASize985x1233px