A local Oswego IL locksmith handling commercial locksmith services as well as government locksmith and GSA locksmith services in Illinois. Citadel Lock & Security has been servicing military and government locks for over 20 years. Providing professional locksmith services in Northern Illinois, Northern Indiana, and Southern Wisconsin. We offer the following locksmith and security services: Oswego Locksmith Services, Keyless Security, Master Key Systems, Automatic Door Closers, Padlocks, Aluminum Storefronts, ADA Compliant Hardware, and keyless security systems.