6-s61-02755Astronaut Alan B. Shepard Jr. is helped into the lower half of his pressure suit for the Mercury-Redstone 3 (MR-3) flight, the first American manned spaceflight.Image Credit: NASA Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/6-s61-02755/Copy URL to clipboard> DownloadShareTagsKennedy Space CenterNASA HistoryProject MercuryWebMod GrandfatheredImage CreditNASASize2162x3000px