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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 ALDRIN (CONT'D) It just came up with some garbage. Well, this caused a little bit of concern because we were quite anxious to have the AGS with us for the whole flight. We were beginning to wonder whether we would or not. Let's see, there was one funny thing that I don't think we've mentioned. It was pretty minor. One of the strokes on the DEDA was not illuminated. Each character is made up of all these different strokes. The one missing was in the middle character, and it would leave you in a position where you couldn't tell whether it was a three or a nine. I didn't realize at the time that there was any room for confusion. Later, in looking at some numbers, you could not really tell whether in fact that was a three or a nine. ARMSTRONG Yes. You just need that one stoke to close it, and it becomes a nine. COLLINS I got the bottom one. ALDRIN With this particular one missing, there was some doubt as to exactly what you had. ARMSTRONG That's true of any digit on any of those electrical switch displays. ## CONFIDENTIAL
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