Hmm, interesting. Do you have any dates and sources for these travel arrangement. Would love to dig around into this a bit more because it says in the FBI docs that his truck was found with a large amount of ammonium nitrate in it.
So maybe he flew to Arizona to pick up the chemicals for a bomb, which would mean maybe he didn't intend to die that day. So his death was unlikely a suicide.
Thanks.
Start here It was hard to find, but this should throw some dates out of his flight to Arizona and the drive back.