Retired Marine General James Cartwright is being investigated in connection with a leak of classified information about a covert U.S. cyber attack, legal sources say. But Cartwright's lawyer, Gregory Craig, said in a statement Cartwright is a hero who loves his country and wouldn't betray it. NBC's Michael Isikoff reports.
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Retired Marine Gen. James Cartwright, former vice chairman of the Joint Chiefs of Staff, attends a congressional hearing on Oct. 1, 2009.