For those that can't be bothered with reading the article: The man was out after NFL, who shares office in the same building. He mistakenly went up the wrong el

For those that can't be bothered with reading the article: The man was out after NFL, who shares office in the same building. He mistakenly went up the wrong elevator banks. In a note the gunman claimed he had CTE, and later shot himself in the chest - I can only assume he did so, for the purpose of his brain being checked of CTE.