Dreaming in Digital

Iwas at a university campus that looked like a high school. I was outside with my coworkers as if we were NCIS agents. In the next moment, I saw a boy holding a can releasing gas. His plan was to kill everyone in one of the buildings. He had sealed every exit off and trapped the whole main floor with the can of gas, which the can gave me the impression that the gas emitted was poisonous or thick. He was planning on suffocating the building. The door he closed behind him was a simple bolt, as the ones seen for crates at docks. With him at the door and while I spoke something to him, I unbolted it and carefully asked him to come outside.