Summary: Multiple Charleston County Fire and EMS units responded to reports of a structure fire and the smell of smoke at 2630 Atranto Road, with subsequent updates indicating the incident was at the Perwin (Fairwind) Apartments at 8755 Fairwind Drive. The caller reported hearing a fire alarm, possibly from a neighboring complex. Responding crews investigated several buildings, including Building D, and determined the source to be a smoke alarm in the backyard of an apartment. No active fire was found, and the situation was contained.