I would say it is all about the balance of risk. For me and mine, I don't reckon we would act much differently for each other as we would for anyone else worth making the effort for. We'd likely be more remorseful for each other, but we'd tend to be objective about it.

If the chance of saving the person were worth the risk to my life, then it doesn't really matter who it is. Likewise, if there's simply no hope that further risk would be of any benefit, then one must do what they can for those who stand a resonable chance for survival.

As for the dead, well, they'd be missed, and grieved for. The character Worf the Klingon on Star Trek TNG said it best; a dead body is just an empty shell. There's simply nothing you can do for a dead man to prevent nature from rendering them the greatest indignity. You serve the dead best in memory of their life.