Personnel in Hangar S at Cape Canaveral, Florida, prepare Wally Schirra's Mercury 8 capsule nicknamed "Sigma 7" for delivery to the launch pad to be mated to the Atlas launch vehicle.
Personnel in Hangar S at Cape Canaveral, Florida, prepare Wally Schirra’s Mercury 8 capsule nicknamed “Sigma 7” for delivery to the launch pad to be mated to the Atlas launch vehicle. Photo credit: NASA