>> the gunman jumps outside of the closet, and fires at bortac officers at the front of the stack.n the head. multiple officers fire back, and hits the gunman and kills him. >> e.m.ts. first! e.m.ts. first! >> what we later learn in the state committee that examined the response determined, is that the door was likely unlocked this entire time. is that the door was likely unlocked this entire time. ♪ ♪ >> narrator: 19 students and two teachers were fatally shot in uvalde, most of them likely during the initial two minutes of gunfire before police entered the school. two students and a teacher died soon after being rescued. among them, eva mireles, who had called her husband from her classroom early in the standoff. texas has now increased the amount of active shooter training for all law enforcement in the state. of the hundreds of officers who responded that day, several have resigned, been reassigned, or retired. at least three have been fired, including chief pete arredondo, who was terminated by the uvalde school board. his lawyer called the chief a fall guy, and said that the