The police report says he’s 66 years old. Another article says he’s 73 years old. He looks 73.
I’ve read several pieces, and 66 seems to be cited most often. And he was planning a book to coincide with the election that was, let’s say, “important.”
https://www.washingtonexaminer.com/news/obama-dhs-whistleblower-found-dead-with-gunshot-wound-in-california