Even more bizarre, he worked security for the Colorado US senate debate the night before, despite being unlicensed to do so. How did that happen?!

"Dolloff had worked for more than a year as a private security guard at a number of events in Colorado, Richards said. The night before the shooting, Dolloff worked as an armed security guard at a debate between Colorado’s U.S. Senate candidates, Richards said. That debate was held at Denver7’s television studio and co-hosted by The Denver Post and Colorado Public Radio."