I know how much you all hate "conspiracy" but here's a couple of things to consider:
He was a "multi-millionaire" that retired from his last known job as a IRS auditor.
He was a registered pilot that sold his plane to a CIA backed company.
He moved over 27 times in 3 years. 2 residences had the same name but in 2 different states.
He transferred large amounts of money..... and was "flagged" over 200 times in two years., the last transfer was $100.000 dollars to the Philippines a country with Islamic problems.
I tried to send a $400 Amazon card and the "government" stopped and flagged me.
I call complete Bullshit on the "official" story.
I think he was a CIA Spook and tried to do a gun deal with terrorists, they found out, and shot him.
Shot up the crowd in the concert.
I would never trust the "government" or anything on the news.