The RFD assisted the Upper Saddle River FD today on Lake road at a structure fire. First units on scene were met with heavy fire conditions requiring large diameter streams. Tower Ladder 441 was placed in front and went to work with the master stream. Since there are no hydrants in the area, tankers were called in from multiple mutual aid departments to establish constant water supply. A draft site was also established to assist in water supply. The incident went to 4 alarms to assist and cover firehouses. The incident is under investigation to find a cause. No injuries were reported.