What should be done with the Knox master key after it is used?

After using the Knox master key, it is essential to immediately return it to the secured unit to maintain the integrity and security of the keys. This procedure is crucial because the Knox key is used to access locked areas, such as commercial buildings, during emergency calls. By returning the key right away, the potential for unauthorized access or misuse is significantly reduced, ensuring that only trained personnel have access to the key when necessary. Proper handling of the Knox master key is part of broader policies regarding access control and security within the Oklahoma City Fire Department, emphasizing accountability and preventing any compromise of emergency resources.