Automatic fire sprinkler systems are a critical layer of protection for buildings and occupants. Sprinklers detect heat and release water only where needed, quickly controlling or extinguishing fires to reduce flames, smoke, and property damage. The Fire Department Connection (FDC) provides firefighters with a way to supplement a building’s sprinkler system by adding water and increasing system pressure during large fires. Properly installed and maintained sprinklers, clear access to the FDC, and unobstructed signage are essential: keep the FDC visible and accessible, test and inspect sprinkler systems regularly, and replace damaged or painted FDC caps. Together, sprinklers and a functional FDC significantly improve fire suppression effectiveness and firefighter safety.