Jungle Penetrator Army Sgt. Bradley McKenzie, left, and Staff Sgt. Kevan Katkus deploy a jungle penetrator while conducting rescue hoist training on Joint Base Elmendorf-Richardson, Alaska, Oct. 21, 2015. McKenzie and Katkus are crew chiefs assigned to the Alaska Army National Guard's 1st Battalion, 207th Aviation Regiment. U.S. Air Force photo by Alejandro Pena SHARE: Download: Full Size (2.38 MB) Tags: Photo Essays, Rescue Hoist Training, UH-60 Black Hawk Helicopter, Joint Base Elmendorf-Richardson, Guardsmen, Alaska, All images Credit: Alejandro Pena VIRIN: 151021-F-YH552-046.JPG Photo Gallery