Regarding the phony wannabe William James Clark - I received this email just now:
Read your post on Blogspot and he was in our store in june and wrote a bad check for $700.00 our store is in Davenport Iowa. FYI
I'm not a lawyer, but it seems to me that check fraud to the tune of $700 is well into felony space - this may explain the FBI's interest in this individual.
Again, the guidance here is CAUTION: While there is no question he is delusional, there is no knowing the mindset of this disturbed individual AND he is known to travel armed. If you encounter this pathetic phony wannabe William Clark - stall for time if appropriate, and contact law enforcement.