So far, all the space exploration related events that resulted in Loss of Crew (LOC) took a complete crew, and as far as we're aware, no accident in space that resulted in loss of human life, be it during launch, descent or even while on the launchpad (Apollo 1), left any surviving crew member astronauts / cosmonauts.
This got me thinking that there must be some procedures in place that would be followed by surviving crew members in the eventuality of a loss of a single or a few members, but not a complete crew. I'm in particular interested in procedures in place while aboard space stations or manned spacecraft in space, but since that's possibly still a bit too broad, let's limit ourselves to how such events are supposed to be handled by surviving crew members aboard the International Space Station (ISS).
A few points to my question that I'd like answers to address / discuss:
- Body retrieval in the event of LOC during Extravehicular Activity (EVA)
- Body storage aboard the spacecraft / space station and transport to the Earth
- Procedures that are in place, and in effect for surviving crew of any nationality
- Notifying spouse and/or family members, and their further contact with the surviving crew
- How much do LOC procedures vary across nations participating in activities aboard the ISS
- Order of importance (priority) of any of these procedures
As I suspect such documentation might already be available online, I will accept answers covering most of these points above in freeform quotes and own description, and referencing used literature (attaching links, where possible). The scope of the question is trying to get an impression of such procedures, with an emphasis on effects of such an event on the surviving crew members and their ability to cope with it, and how much they can count on support from the ground crew.
In a nutshell, how well are the ISS astronauts prepared for any such eventuality?