Top Secret America – 9/11 to the Boston Bombings

Have the hundreds of billions of dollars spent since 9/11 on counterterrorism efforts made us safer? On April 30, Pulitzer Prize-winning reporter Dana Priest traces the journey from 9/11 to the Boston Marathon bombings, examines efforts to improve information sharing among federal agencies tasked with keeping us safe and investigates the secret history of the 12-year battle against terrorism.