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Photos

Snapshots of what’s happening in the Defense Department.

Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Columbia University President Lee C. Bollinger take questions at the Columbia University World Leaders Forum in New York, April 18, 2010.

WORLD LEADERS FORUM

Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and Columbia University President Lee C. Bollinger take questions at the Columbia University World Leaders Forum in New York, April 18, 2010.

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