The same that happens to everyone else: they die, and their components re-join the cycle, fertilizing the soil.
As for an afterlife: I don't believe that our personality survives death, or that we are "spirit pilots" temporarily controlling a mortal vessel. I'm not averse to the notion that there is some kind of immortality, per se, yet I see no reason whatsoever to assume that this resembles any of the common afterlife fantasies around.
Most conceptions of the afterlife resemble childish wishful thinking, based on fear of death. I believe that the "I" cannot survive death because it doesn't even survive brain damage. Our memories, feelings, motivations, habits - they're all products of our neurochemistry, not some supernatural, static entity. With the brain gone, they're gone, too.
They live a horrible life, crippling their own psyche as their Jungian Shadow grows stronger and more twisted. The surest way to lose your own humanity is to deny it in another.
Do I believe in supernatural punishments? No, I consider them a rather silly notion. Ethics and morality are human concerns, not metaphysical forces.
Long story short: no. The only "pecking orders" are the ones we (or other species) create for ourselves.
A natural disaster totally unrelated to spirituality or metaphysics.
A question of astrophysics, biology and the like as far as the "how" is concerned. I attach some meaning to all of these, of course, and consider them spiritually relevant - but all in all, they're still natural phenomena that I imbue with symbolic significance.