Thunderbird Formation The U.S. Air Force Thunderbirds Demonstration Team enacts their signature close-formation maneuver during the Arctic Thunder Open House at Joint Base Elmendorf-Richardson, Alaska, June 30, 2018. Air Force photo by Alejandro Peña SHARE: Download: Full Size (1.64 MB) Tags: Air Force, Northcom, Northern Command, training, Airmen Credit: Alejandro Pena VIRIN: 180630-F-YH552-0014A.JPG Photo Gallery