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JACKSONVILLE, Fla. -- With the heat index in the triple digits, first responders say they're out in the elements much more often.

"People cutting the grass, working in the yard, people get dehydrated very closely," said Mike Lynch with the Jacksonville Association of Firefighters.

Lynch, a first responder with nine years' experience, says on top of being out in the heat, more than 30 pounds of gear firefighters carry also plays a part.

That's why there are procedures in place to making sure rescuers don't dehydrate. That includes having more first responders on the scene so they can cycle fresh bodies in and out while taking plenty of water breaks.

"Rehab is a very important part of any major event," said Lynch. "It's very hard to come back from dehydration."

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