The Fourth of July in 1982 saw thousands of spectators flocked to the California desert for a special event! Astronauts Thomas "TK" Mattingly and Henry Hartsfield made a perfect landing of the Columbia orbiter as the final test flight of the Space Shuttle Program, STS-4, came to a close #OTD in 1982. In addition to receiving a presidential welcome at Edwards Air Force Base, California, the crew witnessed the space shuttle Challenger atop the Shuttle Carrier Aircraft (SCA) begin its first flight