[SS.I 4.0] This article draws on new material made available in 2014 and 2015, including both official reports and Lanza’s online presence that has been discovered and documented by Reed Coleman. The article was originally published in the Journal of Campus Behavioral Intervention (J-BIT) 3 (2015), 1–11. It is reprinted with permission of the National Behavioral Intervention Team Association (NaBITA).