Rochester streetcar track and house fire?

I'm still sorting through batches of old photos. This one was likely shot in Rochester, New York early in the 20th century. It's an odd picture. When I zoomed into where the action is happening, it looks like two hoses are stretched across the road. On the centre track in the distance, I thought I made out what might be a horse drawn trolley, but it's not, it's a horse drawn carriage that is almost on the track. Just to the left, and a little above it, the top of a streetcar on the other track is peeking out. Is that large, horse drawn wagon in the right foreground a piece of fire-fighting equipment? I'm not sure what it happening, but the whole thing gives me the impression that some sort of fire emergency might be on the go.