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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 ARMSTRONG (CONT'D) We set it in and as it turned out, it was right and the PGNS was wrong. By about 40 degrees or something like that. ALDRIN The PGNS was wrong by 40 degrees. ARMSTRONG That's an interesting one, because you can get either answer depending on who you ask; I still think that today. We at least proved to ourselves that the AGS was the correct one. ARMSTRONG Landing gear went down very nicely. No problem with the landing gear and there was no question about that one. We were expecting two distinct sounds, but really they weren't identical sounds. You could hear the PYRO's fire, and just a short time after, there was not as much sound as there was a vibration transmitted up that indicated something had locked down. Of course, we had no way of knowing how many of them had done that. However, when we did fire, we opened up logic power A when we fired them, and then we closed logic power A and fired again, and at this time we heard a click just like a relay going, but no PYRO's fired. ## CONFIDENTIAL
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