Memorials across the nation are planned for Friday to mark the 25th anniversary of the Sept. 11, 2001, terror attacks.
More than 3,000 people died when hijacked airliners hit the World Trade Center, collapsing both towers, and the Pentagon. A fourth airliner crashed in a Pennsylvania field after passengers tried to take back control from hijackers.
The attacks, carried out by al-Qaida at the command of Osama bin Laden, resulted in U.S.-led wars in Afghanistan and Iraq…