San Diego Union-Tribune San Diego's fire chief is urging the City Council to switch ambulance providers in a much-anticipated vote next Tuesday, but two new evaluations clashed on whether the ambulance company's plan to boost service by 20 percent is financially viable. Fire-Rescue Chief Colin Stowell says switching from current provider American Medical Response to Falck would bring long-needed technology and equipment upgrades, while allowing the city to impose stiff penalties for slow emergency response times. Meanwhile, the city's independent budget analyst issued a report this week saying Falck's financial plan is feasible and that making the switch would not be financially risky for the city.