“Right after Black Friday, I had just got done working and I was showing my supervisor the new pistol I bought,” said the co-worker, who asked to remain anonymous.

“We were out by the trucks, and then Tyler and another guy came over and we were all talking about what kinds of guns we were gonna get or had bought, and they started talking about their longest shots. Tyler said he made a 450 yard shot,” he recalled.

“That was like the only time we got [Robinson] to conversate with us, when we were talking about guns that day. He got excited about it — at least, as excited as he can get. He never really showed much emotion. He was just kind of, I don’t know, blank? He was just really quiet,” the man said.

“I remember one time we were talking about [politics] in one of the units, and instead of sitting in the room with us, Tyler went into the back laundry room and sat on a bucket and I think put an earbud in,” recalled the man, noting most workers on the job site had “conservative views.”

“Tyler walked around with clenched fists all the time – like, super hard clenched fists. I remember making a joke to him one time when he had his fists like that, I was like, ‘Are you angry, Tyler?’ And he was like…’That’s just what I do.’ He was always soft-spoken but his fists were always like that,” he said.

“Even in the security footage from UVU, you can see he’s got his fists clenched tight.”