Chaos Challenge Air Force Staff Sgt. Jacob Lara, left, and Senior Airman Matthew Arellano carry a canoe while competing in the Chaos Challenge 2021 at Joint Base Elmendorf-Richardson, Alaska, July 15, 2021. The winner of the multiday event will go on to compete in the 2021 Lightning Challenge to determine the Air Force's best two-person tactical air control party team. SHARE: Download: Full Size (1.12 MB) Tags: Air Force, training Credit: Alejandro Pena, Air Force VIRIN: 210715-F-HY271-0108C.JPG Photo Gallery