Howitzer Sling A UH-60 Black Hawk helicopter sling-loads a 105 mm howitzer during the Arctic Thunder Open House at Joint Base Elmendorf-Richardson, Alaska, July 31, 2016. The biennial event is one of the premier aerial demonstrations in the world. The helicopter is assigned to the Alaska Army National Guard. Air Force photo by Justin Connaher SHARE IMAGE: Download Image: Full Size (1.96 MB) Photo By: Justin Connaher VIRIN: 160731-F-LX370-265C.JPG Photo Gallery