"In the long run, I'm anxious to understand our dependence on contractors."
Adm. Michael Mullen, chairman of the Joint Chiefs of Staff, responding to a soldier's question at Fort Lewis, Wash., about why security contractors in war zones, unlike military troops, are granted immunity when they kill civilians.
"For all my pessimism, there's been progress. It's a work in progress."
Defense Secretary Robert Gates, answering questions at the U.S. Chamber of Commerce about the level of collaboration between the Pentagon and the Department of Homeland Security.