Doug Bewley at the Rocket Engine Test Facility (RETF)Doug Bewley at the Rocket Engine Test Facility (RETF)(1989). Image Credit: NASA/BILL WYNNE Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/grc-1989-c-06696/Copy URL to clipboard> DownloadShareImage CreditNASA/BILL WYNNESize1936x2277px
