SHEBOYGAN, Wis. (AP) — Authorities say a fire following a possible gas explosion in a food truck has left three people with severe burns and needing life support. The Sheboygan Fire Department says that when fire crews arrived on the scene Monday, the fire already had been extinguished but three people needed life support at the scene before being transported to a hospital. The fire occurred shortly before 6 p.m. at Vollrath Park, which hosts food trucks on Mondays. Sheboygan sits along Lake Michigan about 60 miles north of Milwaukee.