The citizen journalist who livestreamed the Monday mass shooting at a Boulder, Colorado supermarket spoke to Inside Edition. Dean Schiller says he was about to buy lunch at King Soopers with his friend, Denny Stong, a 20-year-old employee who died in the shooting, when he heard gunfire. “I don’t think there’s anything that can prepare you, really, for seeing what I saw,” Schiller said. For the next hour, Schiller kept recording. Only later did Schiller discover that Stong was among the 10 victims.