“…3 In 90% of the events, the mass shooter has preplanned his or her activities, right down to knowing where the elevators, stairwells, and exits/entrances are in order to kill as many people as possible. 4 Thus, mass shootings are not as sudden and spontaneous as they appear to be. He or she has also prepared himself or herself physically, often by wearing tactical equipment, and mentally, knowing he or she may not survive the incident.…”