ARLINGTON, Va. (DC News Now) -- Three firefighters were hurt after responding to a structure fire in Arlington on Sunday. The Arlington County Fire and EMS Department said crews responded to the 4100 block of 36th St. S for a structure fire. Three teens taken into custody after fights b reak out at Pentagon City mall There, a firefighter fell through the floor. They were quickly found and taken out of the building. The fire was extinguished, but three firefighters were taken to the hospital with non-life-threatening injuries. The fire marshal will be investigating the cause of the fire. ...read more read less