Maj. TJ Gabrielson, 319th Civil Engineer Squadron operations flight commander, pulls a weighted bag up to the second floor of the fieldhouse during the base commander’s annual firefighter challenge Oct. 10, 2019, as part of National Fire Prevention Week on Grand Forks Air Force Base, North Dakota. Gabrielson’s team competed against four others in a series of six firefighting-themed strength challenges, and took home the trophy with a winning time of less than two minutes. (U.S. Air Force photo by Senior Airman Elora J. Martinez)