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Eugene Cernan and Tom Stafford, Gemini astronauts, June 3, 1966 8:39:33.335 am EST. GT-9 was postponed when TLV 5303 with Agena target vehicle GATV-5004 malfunctioned on May 17. In its place, a substitute target was used for GT-9A; the Augmented Target Docking Adapter (ATDA) was launched by an Atlas on June 1, 1966 (TLV-5304) from Launch Complex 14. However, GT-9A was not launched the same day as planned due to a guidance system computer problem. After a brief hold, the spacecraft was launched on the 3rd day. MISSION: Primary objective of rendezvous and docking was only partially achieved because the shroud on the ATDA failed to jettison. Instead GT-9A performed a number of rendezvous maneuvers, including a simulation of lunar module rendezvous. EVA time was 2 hours, 9 minutes, a new EVA endurance record. During EVA maneuvers, Cernan's visor became fogged, and he was unable to test the Air Force astronaut maneuvering unit. Secondary objective experiment S-10, Agena Micrometerorite Collection experiment was not attempted because EVA did not take place near Agena target vehicle (GATV). INFO: NASA PAO