Biden: "Something good will come out of everything bad"

Speaking at a ceremony dedicating a U.S. Capitol room to Gabe Zimmerman - former Rep. Gabrielle Giffords's staffer who was shot and killed during a two years ago during a "Congress on Your Corner" event in Tucson, Ariz. - Vice President Joe Biden drew parallels between the 2011 tragedy and Monday's twin bombings at the Boston Marathon.