Stories from the History of Nashua’s Police and Fire-Rescue Departments. Media news reporters always like to exaggerate the extent of whatever they are reporting especially when it comes to natural disasters – worst rainfall in ten years, a hundred-year flood, or the worst fire the city has ever seen. With that in mind, here are a few Nashua fires that were deemed the “worst-to-date” in the city, back in the 1880s.