They probably took them off combine corpses since they are most-likely bullet-proof.
1st KF pose was great. But the second seems like it'd be a much harder thing to pose.
The only hard part was calculating how high he should be in relation to the roof edge and getting the turret to fire correctly, other than that it was a normal posing job and I think it turned out well with all things considered :D
Anyway, I just found a skin pack with ties so I did one of the things I wanted to do originally.

"Doing it was easy, getting away with it was what I hadn't thought about...."