Vice President Biden on Wednesday had some strong words about the two men accused of bombing the Boston Marathon last week.

"So why, whether it's al-Qaeda Central out in the FATA or two twisted, perverted, cowardly, knock-off jihadis here in Boston -- why do they do what they do?" asked Biden, whose speech pattern suggested he was speaking off the cuff. "They do it to instill fear, to have us, in the name of our safety and security, jettison what we value most and the world most values about us. ... Our transparency: that's their target."

For more, see Jenna Johnson's story about Biden's comments at the memorial service for a Massachusetts Institute of Technology police officer allegedly slain by one of the Boston suspects.