U.S. Marine Corps Cpl. Juan Esquivel mans the M2 .50-caliber machine gun. U.S. Marine Corps Cpl. Juan Esquivel mans the M2 .50-caliber machine gun mounted in a CH-53 Super Stallion helicopter during a training flight over Marine Corps Air Station Yuma, Ariz., on June 14, 2006. Esquivel and the rest of his helicopter crew from Marine Aviation Weapons and Tactics Squadron 1 are participating in the training exercise Operation Desert Talon 2-06. SHARE IMAGE: Download Image: Full Size (0.05 MB) Photo By: VIRIN: 737880-T-KPS00-728.jpg Photo Gallery