Published: Feb 21, 2013 4:37 PM EST
Updated: Feb 21, 2013 4:46 PM EST

COLLIER COUNTY, FL - When there's an emergency in a canal or a lake, divers, paramedics, fire fighters, and EMS all rush to the scene.

"If we don't train for different scenarios, you don't know what you're going to come up to."

For years, agencies in Collier County have been preparing for situations just like this one. This scenario sent a car into this lake, inside are three dumies.

"The goal is victim rescue, we want to get in the water as quickly as we can and do what's best for the patient and the families."

Families like the Douglases. Cecilia and her two little girls, Madison and Rylee, all died after the car they were in hit a box truck. The impact sent the vehicle into a canal off Alligator Alley.

"The biggest obstacle we have, during a rescue, especially out on the Interstate is time. That call came in at the 87 Mile Marker, we get there as quick as we can. We can have victims out in four minutes. As you've seen today, we had our first victim out in four minutes."

Officials said this training was planned before the Douglas tragedy. It shows just how important practice is to saving lives.

"More continued training on what we know and what we expect to happen, every scene is a little bit different, so you have to train for as many incidents as you can and train for as many obstacles as we can."