S66-37923 (3 June 1966) --- The Augmented Target Docking Adapter (ATDA) as seen from the Gemini-9 spacecraft during one of their three rendezvous in space. The ATDA and Gemini-9 spacecraft are 66.5 feet apart. Failure of the docking adapter protective cover to fully separate on the ATDA prevented the docking of the two spacecraft. The ATDA was described by the Gemini-9 crew as an "angry alligator."