Morality and military training are not the same. The question is about a switch and no repercussions for a reason.
Don't get me wrong, I have the utmost respect for people who risk personal harm to save others. Note the word "risk", by which I mean non-zero change of harm. When chances of harm/death reach close to 100%, it's no longer courage. I don't plan on dieing with someone for the heck of it nor do I expect anyone to jump in to keep me company. The only reason people help is because they think they have a decent chance of making it out alive.