Nashua firefighters battled this 6th Alarm fire in the early morning on 12/2/25. Companies had smoke showing from the firehouse and the Fire Alarm Office reported they could see heavy fire out their windows a couple blocks away. Engine 2 arrived on scene with heavy fire from a multiple dwelling extending into a second building and transmitted a 2nd alarm. C4 arrived on scene right after and struck the 3rd and 4th alarms. The Chief of Department arrived on scene and assumed command and struck the 5th and 6th alarms. Multiple master streams and handlines were used to knock down the heavy volume of fire. Multiple mutual aid companies responded to the fire and remained on scene for several hours overhauling.