HOOK UP Soldiers hook a Howitzer artillery gun to a CH-47 Chinook during a sling-load training exercise on Fort Carson, Colo., Aug. 14, 2014. The artillery soldiers are with the 12th Field Artillery Regiment, and the helicopter is with 4th Combat Aviation Brigade, 4th Infantry Division. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 281245-S-RFM24-177.jpg Photo Gallery