Firefighters use a therm- imaging camera to look for people inside burning structures Tuesday KARK used it to measure firefighter's body heat while they're out in the sun.
"Putting all your winter clothes on, your hat, your gloves," said Captain Steven Bell. "Then taking 70 pounds of equipment and caring that around with you."
Even in the shade the firefighter's outside body temperature exceeded 100 degrees with their gear on. Getting as high as 111 degrees.
It protects them from the flames but it also acts like an oven.
"Your body depends on its ability to evaporate that sweat to cool you off," said Captain Bell, "And in that gear you cannot do that."
So to cool you off, your body sweats even more.
"And that puts you kinda in a cycle," said Bell.
MEMS is dispatched to every call, and the firefighters have to also be aware of the early signs of heat exhaustion.
"You kind of have to put your pride aside and say, 'Hey I'm at my limit. I'm there'."