It's that time of year again, time to fall back and turn the clocks back on Sunday. But, there's one more thing you should do before going to bed Sunday night. Change the batteries in your smoke detector. Firefighters say countless fatalities and injuries could be prevented if people had working smoke detectors that would indicate a fire could be present. According to firefighters, detecors can be puchased for under $10. Those not willing to shell out the $10 can always obtain free detectors at the Zanesville Fire Department.