U.S. Air Force Tech Sgt. Eugene Dotson, 312th Training Squadron fire protection instructor, coaches Air National Guard Airman 1st Class Geovannie Rios-Santos, 312th Training Squadron fire protection student, on weight distribution and proper ways to quickly remove the combustible roof during a vertical ventilation training exercise at the Louis F. Garland Department of Defense Fire Academy on Goodfellow Air Force Base, Texas, Dec. 10, 2020. Vertical ventilation was an offensive strategy that students utilized to create a 4x4 foot exhaust port in order to remove hot and toxic air from inside the burning building. (U.S. Air Force photo by Senior Airman Abbey Rieves)