A Marine Corps UH-1N Huey crew chief assigned to the 773rd Marine Light Attack Helicopter Squadron prepares to provide close air support with the M240B machine gun during a flight in support of Emerald Warrior 2013 on Hurlburt Field, Fla., April 25, 2013. A Marine Corps UH-1N Huey crew chief assigned to the 773rd Marine Light Attack Helicopter Squadron prepares to provide close air support with the M240B machine gun during a flight in support of Emerald Warrior 2013 on Hurlburt Field, Fla., April 25, 2013. SHARE: Download: Full Size (2.02 MB) Tags: photo essays Credit: VIRIN: 440750-B-VYR15-473.jpg Photo Gallery