Bears rookies, vets impress at training camp

The Chicago Bears made several roster changes this offseason, including not re-signing their starting safeties and the retirement of their starting center. Fans should observe new additions Dillon Thieneman (safety), Kalif Raymond (wide receiver), and Garrett Bradbury (center) during training camp. These players are expected to fill key roles, with Thieneman potentially starting at safety, Raymond providing veteran depth and punt return ability, and Bradbury competing for the starting center position.