Photo by Cpl. Mitchell Austin - U.S. Marines with Aircraft Rescue and Firefighting (ARFF) with Headquarters and Headquarters Squadron (H&HS) conduct a training excerise aboard Marine Corps Air Station (MCAS) Iwakuni, Japan, April 30, 2021. ARFF conducts regulary training to ensure they are prepared to respond to emergencies aboard the air station. Hand line drills are desgined to help Marines develop a better understanding of the flow of water pressure while using handheld equipment. (U.S. Marine Corps photo by Lance Cpl. Mitchell Austin)