Rapid Response Posted: Wednesday, February 19, 2014 12:01 a.m. Tweet E-Mail Print Taylor Griffith/Journal Scene North Charleston Fire Department responded at 6:25 p.m. Feb. 12 to the smell of smoke in the WalMart Supercenter on Dorchester Road. The cause was an overheated motor in the air handler on the roof. There was no active fire, according to Bianca Bourbau, PIO. However, for any commercial building, automatic response is seven aparatus, plus command, plus EMS. The lights of the emergency vehicles can be seen during their response.