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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 ## ALDRIN ## 8.2.15 ARS/PGA pressure The pressure integrity check held with the suit loop decreasing maybe 0.1 or something like that. I think there is a little lag in there when you first close the regulators. The tolerance is 0.3. It wasn't anywhere near that. There wasn't any significant change going to the secondary canister. The regulator check is a fairly involved setup of valve switching. I'm sure all of these things are nice to do, but unless you have an extremely intimate knowledge of exactly what you're doing, you can run into some problem there. The fact that you're doing this one step right after another puts you in a non-nominal situation. I would much prefer that this sort of a check be done on the Earth side where you have COMM, because you're dumping the cabin pressure down and you're using a REPRESS valve. I think the ground would agree with that, too. If in other flights it could be worked into the earth-side pass, I think it would be beneficial. I agree with that, although I think the pressure integrity check is relatively straightforward. ## CONFIDENTIAL
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