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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 ARMSTRONG (CONT'D) had disappeared as we got back into that area, and we were looking at relatively dark gray. In the shadow, it was very dark. We could see into the shadows, but it was difficult. ALDRIN We could see very small gradations in color that were the result of very small topographical changes. ARMSTRONG Of course, when we actually looked at the material, particularly the silt, up close it did, in fact, turn out to be sort of charcoal gray or the color of a graded lead pencil. When you're actually faced with trying to interpret this kind of color and that light reflectivity, it is amazing. ALDRIN When illuminated, it did have a gray appearance, very light gray. ARMSTRONG Wouldn't you say it is something like the color of that wall? It isn't very far away from what it looked like. Yet when you look at it close, it's a very peculiar phenomenon. 10.15 PREPARATION FOR EGRESS ARMSTRONG Now, a preliminary comment has to do with the longer time that it took than during our simulations. It is ## CONFIDENTIAL
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