When I was in the Marines we were taught that when caught in an ambush to face the direction of the ambush an attack. Better to die fighting then get shot in the back running. Fewer will die in an ambush if you attack then if everyone runs for cover. An active shooter at the mall and I'm not with family I think I would say F'it and attack. Active shooter with family I would push them into a safe spot and then F'it I would attack. My training/instincts would probably get me wounded or killed but I refuse to be a bystander victim.