SOUTH CAROLINA — We’ve all heard the joke: If Atlanta-based Chick-Fil-A took over vaccine drive-through sites, we’d all get our shots in no time. Well, that came true this week for one community in South Carolina. When a drive-through vaccination site in Mount Pleasant got backed up, Mayor Will Haynie did the only thing that made sense: he invited a local Chick-Fil-A manager to the site to help expedite the process. The Atlanta chain, after all, has mastered the art of the drive-through. “We asked local Chick-Fil-A manager Jerry Walkowiak for help today after a computer glitch backed up...