After witnessing audiences fleeing and hearing gunshots , they made their way into the auditorium .
Four officers responded to the scene in less than a minute after receiving a 7 : 28 p.m. report of the shooting .
After witnessing audiences fleeing and hearing gunshots , officers made their way into the auditorium .
Four officers responded to the scene in less than a minute after receiving a 7 : 28 p.m. report of the shooting .