Vast enterprise of "secret" agencies formed since 911

Click on this link to read a Sarasota Herald Tribune/Washington Post (7-18-10) article about the huge network of secretive agencies that have been created since September 11th, 2001.  Collaboration between these many agencies is proving difficult and the amount of intelligence data being generated dwarfs the abilities of leaders to keep up with it.  Is such a vast ediface necessary in the 21st century to sustain the security of a world superpower?