I'll promis you VWF was privvy to many things in his personal & professional capacity, any of which could have caused his demise.
I guess you could call it "death by association".
Then there were those middle eastern types seen around his car at Marcy Park.,,,and the fact that he was in charge of NSA which oversaw electronic codes for money transfers and the military infrastructure.
He looked the other way when Hillary facilitated the trade of agents of mass destruction, after all George Bush did too and Hillary was his sweetheart. But giving away the codes to all our armed forces, something within him would not allow that.
I digress, from the above thread though. Death by bioterrorist agent has been going on for as long as there are spooks in government.