MILWAUKEE (CBS 58) -- A Milwaukee Police Detective used real-life examples at an active shooter training.

"If you look at the tables you're sitting at right now, is that a good place to go? You almost put yourself at a disadvantage."

The presentation was held at the Milwaukee Police Academy on Wednesday evening.

People listened to 911 calls from the Columbine Shooting. Afterward, Detective Carlo Davila explained what callers could have done differently to protect themselves from a school shooter.