MORENO VALLEY, CALIFORNIA— Two small children, and 2 adults, died when they where sandwiched between two semi-trucks. The vehicles caught fire Sunday afternoon in the city of Ontario, located southern California. CHP reported 4 deaths and 3 minor injuries, and shut down the highway Saturday afternoon while the crash was investigated. The deaths were caused by a chain-reaction of wrecks that cumulated with the 4 deaths. Paramedics pronounced the victims dead at the scene. Ryan Villalpando, 32, wife Veronica Villalpando 29, their son Mateo, 4, and infant Bella Rose died in the crash south of East Jurupa Street in Ontario.