Among other things, he managed to land Eagle with only seconds of fuel remaining, having manually maneuvered it to an alternative landing site after the computer had navigated to a primarly landing area covered with boulders. All this while several unexpected computer alarms were going off.
Maybe others could have done that as well, but Armstrong actually did it, staying calm under unimaginable pressure and averting disaster.
Maybe others could have done that as well, but Armstrong actually did it, staying calm under unimaginable pressure and averting disaster.