The sound of a bell holds special significance for firefighters. The toll of a bell called members to the station, signaled the beginning of a shift, notified departments of a call for help, and indicated a call was completed and the unit had returned to the station.

Fire Departments also sounded a series of bells when a firefighter died in the line of duty to alert all members that a comrade had made the ultimate sacrifice. Ringing of the bells continues today during the funerals or memorial services for firefighters.

For the fifth year, bells will ring from coast to coast as we as a nation pauses on Sunday, October 4, 2015 to honor firefighters who've died in the line of duty.

The National Fallen Firefighters Foundation is honoring the lives of those lost with the Fifth Annual Bells Across America and ask communities, fire service organizations, and religious organizations to help honor fallen firefighters by participating in Bells Across America for Fallen Firefighters.

A moment of remembrance can occur at any time during Memorial Weekend, October 3-4, 2015.

So if you hear the sound of bells on October 3rd or 4th, please take a moment to remember the live of those who made the ultimate sacrifice.