The report includes a haunting image of about a hundred students packed shoulder-to-shoulder in the third floor hallway, casually responding to what they believed was a routine fire drill. They had no idea a muzzle flash in the massacre two floors below had likely set off the fire alarm. Neither did they know Cruz was making his way toward them. The panic those fleeing students and teachers faced in the following minutes had to have been horrific. Six died. Had the killer ascended moments earlier, it would have been much, much worse.