MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines with Aircraft Rescue and Firefighting (ARFF), Headquarters and Headquarters Squadron (H&HS), Marine Corps Air Station (MCAS) Yuma conduct hand line drills during live burn training on MCAS Yuma, Ariz., June 25, 2019. Hand line drills focus on techniques to push fuel fires away from aircraft, ARFF Marines train monthly to enhance their readiness when responding to emergencies on the flight line. (U.S. Marine Corps photo by Sgt. Allison Lotz)