Who Was Thomas Crooks?

We're learning more about Thomas Crooks, the man who tried to assassinate Donald Trump. Crooks was a high school student when he appeared in an ad for an investment company. Inside Edition found video of Crooks on his high school Facebook page, explaining computer coding to another student. Crooks' high school years were troubled, according to one former peer. Jason Kohler says Crooks was rejected by the school's rifle team.