10 years ago, on Sept. 11, 2001, terrorists seized control of four airplanes and crashed them all, bringing down the World Trade Center towers and ripping a hole in the Pentagon. Throughout this anniversary day, the editors at Photo Journal will be live blogging the memorial ceremonies and worldwide reactions through a curated series of photographs. The images are posted as they become available and do not necessarily represent the time they were taken. The historical photos you see are juxtaposed with images from today. Robert Peraza, who lost his son Robert David Peraza, pauses at his son's name at the North Pool of the 9/11 Memorial on September 11, 2011, in New York. Police officers from the United Kingdom march across the Brooklyn Bridge on the morning of the 10 year anniversary of the Sept. 11 attacks. A man wearing a fireman's hat stands while an American flag covers the field during a ceremony before a game between the Buffalo Bills and the Kansas City Chiefs at Arrowhead Stadium in Kansas City, Missouri on the tenth anniversary of the attacks of September 11, 2001.