Bretagne, shown here at age 13, worked as a search dog at ground zero after the Sept. 11 attacks. She died Monday at 16, the last known surviving Sept. 11 search and rescue canine. Charlotte Dumas/Barcroft Media via Getty Images hide caption

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Relatives of victims of the Sept. 11 attacks are periodically flown down to Guantanamo Bay, Cuba, to witness court proceedings against five men accused of plotting the attacks. For the witnesses of the most recent court session, the experience raised questions about justice, humanity and the ethics of the death penalty. Joe Raedle/Getty Images hide caption

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Families Of Sept. 11 Victims Watch Guantanamo Hearings With Mixed Feelings

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Talking Point Or Proof Of Value: CIA Tactics And The 'Second Wave' Plot

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Report Reveals Deeply Misguided Interrogation Tactics, Feinstein Says

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As Torture Report's Release Nears, CIA And Opponents Ready Responses

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Family members of victims of the Sept. 11 attacks demonstrate against the decision to transfer the unidentified remains to a repository at the World Trade Center site. Eric Thayer /Reuters /Landov hide caption

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An artist's image of the wall that will separate the public from the repository where unidentified remains will be kept at the National September 11 Memorial Museum in Manhattan. 911memorial.org hide caption

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A woman looks out at One World Trade Center from inside the 9/11 Empty Sky memorial at Liberty State Park in Jersey City, N.J., on Wednesday. Americans commemorated the 12th anniversary of the Sept. 11 attacks with solemn ceremonies and pledges to not forget the nearly 3,000 people killed. Gary Hershorn/Reuters/Landov hide caption

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