1) Link the car wreck to the empty markers, then setpos the loons around that car wreck.
2) if you don't care about whether the bodies are buried or not, the easiest would be to use the KnowsAbout command.
In the condition line of a trigger :
(!(alive loon1) and ((loon2 KnowsAbout loon1)>1.5 or (loon3 KnowsAbout loon1)>1.5)) or (!(alive loon2) and ((loon1 KnowsAbout loon2)>1.5 or (loon3 KnowsAbout loon2)>1.5)) or (!(alive loon3) and ((loon1 KnowsAbout loon3)>1.5 or (loon2 KnowsAbout loon3)>1.5))
That should do the trick.
3) Another trigger, condition :
loon1IsHit
In the init line of loon1 :
this addEventHandler [{Hit},{loon1IsHit=true}]
You might want to take a look at KeyCat's
GroupLinkII. It'll do exactly what you want, and even more
.
P.S. : previewing the post... the variable is LOON1-IS-HIT not LOON1I-SH*T :-X