 Beginning in 1973, field reports of Ford Pintos consumed by fire after low-speed rear-end collisions were received by Ford's recall coordinator office.Based on standard procedures used to evaluate field reports, Ford's internal recall evaluation group twice reviewed the field data and found no actionable issue.In 1973, Ford's Environmental and Safety Engineering division developed a cost–benefit analysis entitled "Fatalities Associated with Crash Induced Fuel Leakage and Fires" for submission to the NHTSA in support of Ford's objection to proposed stronger fuel system regulation.