Not a matter of "if", but of "when" : the status of U.S. response following an RDD attack : joint hearing before the Oversight of Government Management, the Federal Workforce, and the District of Columbia Subcommittee and Ad Hoc Subcommittee on State, Local and Private Sector Preparedness and Integration of the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Tenth Congress, first session, November 15, 2007.