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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.
“Gray”3 pages
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## CONFIDENTIAL pursue garment assembly Well, there's a step verifying PGA pressure above 4.5, and decaying slowly. And it did that. It decayed slowly, and the cabin stayed at around 1 psi. We had to get that down before we could open the hatch, it appeared to me. We were just waiting there between those steps of PGA pressure and cabin pressure coming down, and opening the hatch. And we didn't really want to go and open the overhead hatch. We like to open only one of them, and leave the other one the way it's been. When the hatch was finally opened, it took an initial tug on it, and it appeared to bend. The whole hatch as it opened on the far side came toward me. As soon as it broke the seal, it appeared as though I could see some small particles rushing out. Then, of course, the hatch came open and gave us a more complete vacuum. Then we went to opening the water. It seems to me that, if there is that delay to get rid of the pressure, maybe one could go ahead and open up the water ahead of time before you actually get it down to the point where the hatch is open. Maybe that would compound the problem. Once the water window did clear, it seemed that the cooling was noticeable almost immediately. ## CONFIDENTIAL
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