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This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.
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## CONFIDENTIAL We got the batteries on the line a little sooner because I think the ground thought that they might have cooled down a little bit more than their preflight information might have indicated. So we brought those on before TIG minus 30. Another change we lifted off with the updata link in VOICE BACKUP, brought the VHF ranging on at TIG minus 15, and pressurized the APS tanks. I guess it slipped my mind, perhaps Neil's too, that the Apollo 10 crew had noted that they saw very little decrease in the helium pressure. At first, it looked like we had about a 100-psi decrease in Tank 1 and zero decrease in Tank 2. That was probably the worst thing we could have seen because we figured that just one tank had pressurized. The ground was a little concerned about that. If they were not concerned, I wish that they had given us just a little bit more comforting thoughts at that particular time, because we hesitated at that point, at least I did, in doing some more of the switch configuration, waiting for a confirmation from them. 10. 51 GENERAL LUNAR SURFACE FATIGUE I wasn't tired at all. I worked real hard at a high workload right there near the conclusion when I was pulling the rock boxes up. We knew that was going to be hard, ## CONFIDENTIAL
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