Firefighter Thomas Rogers recorded this video of a tumbleweed tornado that helps spread a controlled fire beyond what was originally intended. Taken at a wildlife refuge in Denver, Colorado, several fire teams were at hand to help control the blaze. "Prescribed burn of 150 acres at the Rocky Mountain Arsenal in Denver, CO. Participating agencies: USFWS, USFS, South Metro Fire, West Metro Fire, Denver Fire, Fairmount Fire. A dust devil formed and drew the prescribed fire into it. It crossed the line and burned about 1 additional acre."