According to the Federal Bureau of Investigation (FBI), "an active shooter is an individual actively engaged in killing or attempting to kill people in a populated area." This Active shooter: Motives, Methods, and Madness textbook provides in-depth understandings of active shooters pre-attack and post-attack behaviors, motives, the method of operation (MO), and triggers. This book analyzes past major active shootings incidents, provides relevant statistics and trends, and victimology of active shooting incidents. This book describes the Advanced Law Enforcement Rapid Response Training (ALERRT) program, the FBI's Law Enforcement Enterprise Portal (LEEP), and The FBI's Office for Victim Assistance (OVA) program.