If it is the same guy, it may be a little surprising that there's just the photo and nothing else.
Wouldn't a graduating senior have more than that in the yearbook?
He could have been a freshman or sophomore or something.
If he graduated three years ago, he'd be, what? Twenty or twenty-one now?
No way is he that old.
Anyway, I'm skeptical after that "antifa Marxist KMFDM" photo of the shooter that actually looked nothing like the guy surfaced.
There are people who really like to spread false stories.