Sept. 11, 2021, marked the 20th anniversary of the 9/11 terrorist attacks on the United States that left 2,977 dead in New York City, Washington, D.C., and outside Shanksville, Penn. Pictured is the South Memorial Pool at the 9/11 Museum & Memorial in Lower Manhattan on the World Trade Center site. News-Review Assistant Editor Eric Johnson has visited all three 9/11 memorial sites. —Staff Photo By ERIC JOHNSON