Janet Napolitano, Secretary of the Department of Homeland Security, listens to a reporter's question during an NFL Super Bowl Security news conference, Monday, Jan. 31, 2011 in Dallas. (AP Photo/Eric Gay)

Photo by: Eric Gay

Janet Napolitano, Secretary of the Department of Homeland Security, listens to a reporter's question during an NFL Super Bowl Security news conference, Monday, Jan. 31, 2011 in Dallas. (AP Photo/Eric Gay)