I guarantee there would be repercussions though. At least in the United States.... EDIT: Actually, I'd venture even the family of the 5 could sue you if you were even *there* and did nothing... courts here kinda suck in that regard... To the first: If their chance of survival is pretty much 0% and your chance to change that is greater than 0% is it not worth pursuing to at least have a chance? As to the second I disagree: Nobody, usually, intends to get themselves killed by helping another person - but the moment you make the decision to assist you accept that possible outcome.