I work with a man whose father was instrumental on working with NASA to make that landing happen.
He said that they landed that module on the moon with very primitive technology in comparison to what we have today. It took grape fruit size cahona's to climb in a rocket filled with rocket fuel, let them light it up and shoot you into outer space, land a module safely on the moon, and, get yourself and crew back.
Thanks Mr. Armstrong.......may we find the courage that you had then in facing our challenges today