The Coast Guard will enforce certain safety zones located in the federal regulations for Annual Events in the Captain of the Port Eastern Great Lakes Zone. This action is necessary and intended to protect the safety of life and property on navigable waters prior to, during, and immediately after these events. During each enforcement period, no person or vessel may enter the respective safety zone without the permission of the Captain of the Port Eastern Great Lakes or their designated representative.
Source: Federal Register USCG
Link: Special Local Regulations; Annual Events Within the Captain of the Port Eastern Great Lakes Zone