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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 This was during the nonpropulsive part of the vent and you could see two streams coming out of either side as the oxidizer was vented out. Exactly opposite to each other were two cones going out. I guess the cones were 30 degrees out one side and 30 degrees out the other, so it was definitely observable. COLLINS But something appeared to be wrong with the attitude they gave us. I don't know whether they miscalculated or what, but they gave us an attitude to see the slingshot out the hatch window. We confirmed that we were looking through the correct window, and it wasn't there. ## 5.35 S-IVB VENTING OPERATION COLLINS I don't know what to say about that. I guess it went nor mally. 5. 36 PROPELLANT DUMP DURING SLINGSHOT MANEUVER ## ALDRIN We didn't make use of that procedure of keeping we didn't use it to any advantage of having the other state vector keep track of the S-IVB. It sounds Mickey Mouse, but it could have been some assistance in telling us where the S-IVB was. ARMSTRONG Yes. # CONFIDENTIAL
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