Well that seems wierd, because the radio in the other room on the ladder, you can hear him hanging himself. Hint: the guy in the room with wierd writing, is Edward hung. Richtofen is related to this, because he's been there before, because he made the wunderwaffe. That's where he made them.
actually, the choking and gagging is from cyanide pills. he says"where are my pills"
we know they are cyanide oills because on the saftey booklet it says get yur cycnaide pills