Subscribe to the Magazine View this as website Tunnel to Towers expands mission to leave no veteran behind SHANKSVILLE, PA — Two Augusts ago, I joined Frank Siller a few miles from his quest to reach this Somerset County borough as part of his 537-mile tribute walk to all those lost in the 9/11 terrorist attacks. The walk started in Washington, D.C., and would end at Ground Zero in New York just in time for the 20th anniversary of the deadly attacks on the World Trade Center. Read the full story here. ...