Flowers sit on one of the benches of the Pentagon Memorial at the at the Pentagon, Thursday, Sept. 11, 2014. President Barack Obama will attend the wreath laying later this morning to to mark the 13th anniversary of the 9/11 attacks. (AP Photo/Pablo Martinez Monsivais)

9/11 commemoration held in open plaza

Family and friends of those who died read the names of the nearly 3,000 people killed in New York, at the Pentagon and near Shanksville, Pen…

Sam Pulia

Photos: Nation remembers 9/11

The nation pauses Thursday to mark the thirteenth anniversary of the Sept. 11, 2001 terror attack.