It was no April Fool’s joke for residents of Luverne, Minnesota. A squirrel chewed through wires at the city’s east substation, causing a massive substation fire and a city wide power outage. (See the video in the KSFY-TV news report here.) According to the report, residents heard the arcing that immediately preceded the outage and witnessed 12-foot-high flames and billowing smoke above the substation. Damage to the substation was reportedly extensive.