Roswell Police and Fire Departments are inviting everyone to join them for National Night Out on Tuesday, August 2nd at the Roswell Convention Center parking lot. The event will run from 5 to 8 p.m.McGruff the Crime Dog will also make an appearance and there will be a “jolly jump” and carnival games for the kids. The event is free and there will be hot dogs, chips, water and soda. Free raffles will also take place.