Matt was working as a contractor for a branch of the government. He made the mistake of being interested in the hobby of paper target shooting at about the same time as the VA Tech shootings and talking to someone about this hobby at work. Keep in mind he wasn’t even talking about those shootings, in fact he was discussing how he wanted a gun which would make it difficult to kill someone.
He was promptly fired and not allowed back to work because people were scared of him.
To top it all off, he was later visited by police detectives for making a comic about his experience, because it was a “borderline terroristic threat.”