Published: Jul 16, 2014 3:57 PM EDT
Updated: Jul 16, 2014 4:24 PM EDT

LEE COUNTY, Fla.- When tragedy strikes, every second counts, especially when you have multiple people injured or dead. Today, WINK News went along with firefighters from South Trail and Iona McGregor Fire Departments during a training exercise. The call-- an explosion erupts after a bomb squad demo goes wrong.

"We heard the call, we got dispatched like it was a real thing, we got a game plan in the truck," said Iona McGregor Firefighter Luke Bouchard.

It looks like the scene out of a horror film. The scenario, a bomb squad was doing a demonstration for children and bomb accidentally goes off, and multiple kids are injured.

"Help, help, help!"

Firefighters have to act quickly, because they don't know how badly injured the people are inside.

"It's not something we deal with on a daily basis, it's a rare event, which is a good thing."

You can see some of the patients have missing limbs, others have head injuries, and there are even some who died during the blast. The mock exercise is to help firefighters recognize who is the most injured, so they can be treated tagged and transported.

"We got a red tag back here."

"The first ambulances are going to transport the worst, the most critical patients, and the patients that are deceased we are going to leave them in place and not worry about them."

In this particular exercise, one team took one half of the building, the other team took another. It was a plan these firefighters felt was the best to get help to the injured quickly.

"Hello, anybody back here? Fire department, hello?"

But, Firefighter Luke Bouchard tells WINK News, communication is key when you have multiple agencies responding to mass casualty situation.

"We have a lot of trust in each other as a crew and I trusted my guys to go in there in two different teams and handle business," said Bouchard.

 A total of 140 crew members took part in the training from both departments.