Marines with Marine Heavy Helicopter Squadron 465 “Warhorse” mount a .50-caliber machine gun onto a CH-53E Super Stallion aboard Marine Corps Air Station Miramar, California, Nov. 16. Marines with HMH-465 will conduct aerial gun shoots, fire bucket training and terrain flights over the course of five days in El Centro, California. - Marines with Marine Heavy Helicopter Squadron 465 “Warhorse” mount a .50-caliber machine gun onto a CH-53E Super Stallion aboard Marine Corps Air Station Miramar, California, Nov. 16. Marines with HMH-465 will conduct aerial gun shoots, fire bucket training and terrain flights over the course of five days in El Centro, California.