Army crew chiefs prepare M240B machine guns for UH-60 Black Hawk helicopters on the flightline before participating in aerial gunnery training at the Army Aviation Support Facility, on Joint Base McGuire-Dix-Lakehurst, N.J., April 16, 2015. Army crew chiefs prepare M240B machine guns for UH-60 Black Hawk helicopters on the flightline before participating in aerial gunnery training at the Army Aviation Support Facility, on Joint Base McGuire-Dix-Lakehurst, N.J., April 16, 2015. SHARE: Download: Full Size (2.09 MB) Tags: Photo Essays Credit: VIRIN: 896558-R-RJD81-750.jpg Photo Gallery