Columbine by Dave Cullen:
Eric wrote about his childhood frequently and fondly. His earliest memories were lost to him. Fireworks, he remembered. He sat down one day to record his first memory in a notebook and discovered he couldn’t do it. “Hard to visualize,” he wrote. “My mind tends to blend memories together. I do remember the 4th of July when I was 12.” Explosions, thunderclaps, the whole sky on fire. “I remember running outside with a lot of other kids,” he wrote. “It felt like an invasion.”
Eric savored the idea—heroic opportunities to obliterate alien hordes. His dreams were riddled with gunfire and explosions. Eric relished the anticipation of the detonator engaging. He was always dazzled by fire. He could whiff the acrid fallout from the fireworks again just the contemplating the memory. Later the night of the fireworks display, when he was twelve, Eric walked around and burned stuff.