Security was tight as a bomb-sniffing dog makes its rounds out front of the courthouse. Alleged Boston Marathon bomber Dzhokhar Tsarnaev appeared for an arraignment at the John Joseph Moakley United States Courthouse to face charges in the Boston Marathon bombings.
{"Image ImageDescription": "BOSTON - JULY 10: Security was tight as a bomb-sniffing dog makes its rounds out front of the courthouse.  Alleged Boston Marathon bomber Dzhokhar Tsarnaev appeared for an arraignment at the John Joseph Moakley United States Courthouse to face charges in the Boston Marathon bombings. (Photo by John Tlumacki/The Boston Globe via Getty Images)", "Image Copyright": "2013 - The Boston Globe"}