Firefighters are usually the first ones on scene on a medical or heat-related call, then EMSA transports the patient to the hospital.
According to EMSA, there have been more than 30 heat-related calls in Tulsa in the past two weeks.
These first responders say they're well-equipped to beat the heat and save lives.
Captain Jeff Johnson from Fire Station 27 said they carry ice-packs, thermometers and IV fluids in their fire trucks to treat patients for heat-related illnesses.
They have to prepared around the clock for any calls.
"Anytime we get a call once it's dispatched, we're getting in the truck and leaving the door in less than a minute," said Captain Johnson.
Then, it takes less than five minutes to arrive on scene.
Captain Johnson reminds people to stay hydrated in this heat and drink a lot of water. Avoid any drinks with caffeine.