[MrLucky1966]

Imagine his torment if Armstrong and Buzz were marooned on the moon and Collins had to leave them behind.

That would be one decision that would be so tough to make. God forbid, if Armstrong and Aldrin crashed and died, well, the decision would be easier, life goes on, but to leave them stranded as per your scenario, if it was me it would haunt me to this day even if it was the only thing to do.

[Hulka]

It was a scenario they trained for and it was a true nightmare scenario for all. . .especially Collins.

[rdl6989]

Agreed, see post 9. Ive often wondered how the lunar and command modules rejoined after liftoff from the moon. To me that must have been nerve wracking.