The Coast Guard announced that it will enforce a security zone in the Potomac and Anacostia Rivers, along with nearby waters in Washington, DC, for the 59th Presidential Inauguration events from January 17 to 25, 2021. This measure is to protect government officials and enhance safety, especially against potential threats. During this period, people and vessels are not allowed to enter or stay in the zone unless they have permission from the Captain of the Port. The Coast Guard, along with other law enforcement agencies, will enforce this rule, and updates will be announced if the conditions change.
Simple Explanation
During an important event in Washington, DC, the Coast Guard will make sure that certain areas in the river are off-limits to everyone unless they say it's okay, to keep everyone safe. They're doing this because really important people will be there, so they want to make sure nothing bad happens.