This week, you may hear gunfire, but authorities claim it's a drill. On Thursday from 7:30 a.m. until 4:30 p.m., the Cumberland County Sheriff's Office will hold a comprehensive training exercise in the county courthouse on West Broad Street. The county has stated that the courthouse and its environs will be off-limits to the public during the exercise. All court proceedings will take place virtually, and only emergency cars will be permitted to park in the front lot.