​Cheyenne Fire Rescue and the Cheyenne Police Department are training for a day they hope never comes.

In an effort to make sure first responders know what to do in an active shooter situation, the two departments are participating in three days of training at the Cole Shopping Center this week.

​"Doing a joint exercise like this allows us to see what things would actually look like in the real world when we're working on these together," said Police spokesman Officer Kevin Malatesta. "It's a little chaotic, things are flowing quickly, but it's important that we practice these things together."

"We want to know what police officers do (and) police officers want to know what the fire department needs," said Cheyenne Fire Rescue spokesman Scott Smith.

"We want to be prepared in case something like this happens and we try to make it as real as possible," Smith added.

Monday marked the first day of the training. The two departments will also be training from 9 a.m. to noon and from 1 p.m. to 4 p.m. Wednesday and Thursday.