Yeah, well we're never told who's sending them
on these missions are we?
And they seem to carry out their mission
among sworn enemies which they often express their disliking to...
and yet haven't killed each other?
Oh and in the recording on the loading of Kino in Solo,
doesn't Richtofen say he doesn't trust his 'allies'?
Perhaps they're starting to come round or remember what happened?
Here's some support.
Seriously though; the team would seem to be super soldiers... managing to kill seemingly endless amounts of zombies... while no-one
else could... I mean Der Riese was a military installation, how can four men clean out a zombie horde and not all the soldiers?
More points
.115 exposure doesn't effect them
.they are immune to being transformed into zombies