National Silver Alert Act, the Silver Alert Grant Program Act of 2008, and the Kristen's Act Reauthorization of 2007: hearing before the Subcommittee on Crime, Terrorism, and Homeland Security of the Committee on the Judiciary, House of Representatives, One Hundred Tenth Congress, second session, on H.R. 6004, H.R. 5898 and H.R. 423, July 15, 2008.