Jamey Brewer and Shauna Moore had only been manning the Salvation Army kettle bells at the Georgia Street Walmart for 40 minutes on Wednesday when Brewer, an Atmos Energy employee volunteering alongside his coworkers, said he’d be hearing bells in his head from all the ringing. Across the city at Sam’s Club, some passersby simply smiled at Joy Riddles, a four-year veteran kettle bell ringer, and walked on by.