Douglas Pad 17A Pre-Launch Thor Missile #128. Official stamped 8 x 10 inch glossy high quality photograph. USAF Air Force Missile Test Center, Patrick AFB in Florida. Used, curved. This is from the personal photograph collection of Gerry C. Coleman (Gerald Claiborne Coleman), a graduate of LSU in aeronautical engineering, he worked for Douglas, McDonnell-Douglas and Boeing in several capacities. He was one of the engineers who developed the engines that took the US to the moon and back. He was especially proud of the work his group did to design, build and fly a Single-Stage-To-Orbit X-plane rocket known as the "Delta Clipper" which took off and landed from it's tail.