** FILE ** In this Jan. 29, 2011, file photo, then Joint Chiefs Vice Chairman Gen. James E. Cartwright takes part in media briefing at the Pentagon in Washington. The retired Marine general is under investigation for allegedly leaking classified information about a covert cyberattack on Iran's nuclear facilities, according to media reports Thursday, June 27, 2013. (AP Photo/Pablo Martinez Monsivais)

Photo by: Pablo Martinez Monsivais

** FILE ** In this Jan. 29, 2011, file photo, then Joint Chiefs Vice Chairman Gen. James E. Cartwright takes part in media briefing at the Pentagon in Washington. The retired Marine general is under investigation for allegedly leaking classified information about a covert cyberattack on Iran's nuclear facilities, according to media reports Thursday, June 27, 2013. (AP Photo/Pablo Martinez Monsivais)