Chattanooga firefighters and volunteers with the local chapter of the American Red Cross walked door-to-door Saturday morning, installing free smoke alarms in the Lake Hills Subdivision.

They installed 20 smoke alarms in homes that needed them.

This smoke alarm distribution event coincides with this weekend as we change our clocks to daylight saving time. 

Fire Marshal William Matlock said it's always important to put fresh batteries in your smoke alarms and carbon monoxide detectors. 

Smoke alarms that are over 10-years-old no longer offer reliable fire protection. 

Both state and national data reflect that many fatal fires occur at night while the victims are sleeping. 

Many fire departments in Tennessee offer free smoke alarms and installations through the State Fire Marshal's Office's "Get Alarmed, TN!" program. 

Call your local fire department to see what resources are available in your area.