Senior Airman Teddy Compston, an explosive ordnance disposal journeyman, with the 1st Special Operations Civil Engineer Squadron detonates an improvised explosive device during a training exercise at Hurlburt Field, Fla., Nov. 19, 2015. Wood boxes, plastic containers and backpacks are some items that can be used to make an improvised explosive device, as well as multiple types of batteries. (U.S. Air Force photo by Senior Airman Meagan Schutter)