An Alaska Air National Guard C-130 Hercules prepares

An Alaska Air National Guard C-130 Hercules prepares to refuel an HH-60 Pave Hawk for a Joint Forces Demonstration during the Arctic Thunder Open House, July 31, 2016 at Joint Base Elmendorf-Richardson. The biennial event is historically the largest multi-day event in the state and one of the premier aerial demonstrations in the world. Opened to the public, Arctic Thunder featured more than 40 key performers and found acts, July 30 and 31. (U.S. Air Force photo by Senior Airman James Richardson)