The man nominated to be the next US director of national intelligence has defended the role of private contractors in the intelligence community.<br /><br />Retired Air Force General James Clapper was speaking in the wake of a series of articles in The Washington Post which have revealed the extent of involvement of the private sector in the US government's top secret programmes.<br /><br />There are also concerns over former spy chiefs working for the private contractors after leaving public office.<br /><br />Roger Wilkison reports. (July 21, 2010)