Apartment Building, Residential Gillette, WY – Sprinkler system extinguishes early morning fire in apartment building March 30, 2015 viking210 The Campbell County Fire Department responded to 1926 Harvest Moon in Gillette for a fire alarm activation at 6:12 a.m. Friday. The call was upgraded to an active structure fire after neighbors reported seeing flames in the rear of the building. Upon arrival, crews found a four-plex apartment building with fire and heat damage in the back porch area of a lower unit, according to a fire department incident report. A fire sprinkler had activated and extinguished the fire before the department’s arrival.