How to land on the moon.
BRINKLEY: During the actual landing on the Moon, when the program alarms sounded, what was your reaction? How did you respond?
ARMSTRONG: You're always concerned when any kind of alarm comes on, but it wasn't a serious concern because there wasn't anything obviously wrong. The vehicle was flying well, it was going down the trajectory we expected, no abnormalities in anything that we saw, other than the computer said, "There's a problem, and it's not my fault."
The people here on the ground were right on top of that, and of course, the computer continued in a contrary manner periodically all the way to the surface. But my own feeling was, as long as everything was going well and looked right, the engine was operating right, I had control, and we weren't getting into any unusual attitudes or things that looked like they were out of place, I would be in favor of continuing, no matter what the computer was complaining about.