Two homes in Warren County were completely destroyed by fire last week – with one resident escaping with only the clothes on his back.This shows the need for a working smoke detector in every home, local fire officials say. Smoke detectors save lives.According to the National Fire Protection Association, having a working smoke detector cuts the chances of dying in a fire in half. That’s a tremendous statistical advantage for a device that typically costs under $20.But if cost is an issue, McMinnville Fire Department and Morrison Volunteer Fire Department have free smoke detectors for homeowners in their areas.“We still have our program,” said McMinnville Fire Chief Kendall Mayfield.