A fire hose deployment device for a firefighting robotic vehicle comprises a wagon body having a bottom and two generally vertical sides, a front tongue coupled to the wagon body and hitched to a rear hitch of the robotic vehicle. The wagon body has left and right wheels coupled to the wagon near the rear of the wagon body, and the wagon body carries a fire hose with a first end coupled to a nozzle on the robotic vehicle and a second end coupled to a fluid source.