Marines with Aircraft Rescue and Firefighting extinguish a fire during controlled burn exercises aboard Marine Corps Air Station Miramar, Calif., Feb. 23. Marines with ARFF use jet fuel to ignite a fire in a controlled setting to practice putting it out. The fires can reach over 2,000 degrees. - Marines with Aircraft Rescue and Firefighting extinguish a fire during controlled burn exercises aboard Marine Corps Air Station Miramar, Calif., Feb. 23. Marines with ARFF use jet fuel to ignite a fire in a controlled setting to practice putting it out. The fires can reach over 2,000 degrees.