After receiving the 911 calls about the Aurora theater shootings, the first law enforcement officers were on the scene within 90 seconds.

And within minutes, 25 officers flooded the area to apprehend the alleged shooter and help the 59 people wounded in the attack. Some officers drove the injured to hospitals in their squad cars.

An audio recording of police scanner traffic in the minutes after the shootings portrays a calm dispatcher at the epicenter of a chaotic scene who displayed an admirable level of professionalism. . .