Senior list advisor to the chairman of the Joint Chiefs, Gen. Joe Dunlea says he was trying to make sure his staff knew they could do all this stuff but it would come at a cost. "You're not there to ... make the bosses feel good about themselves," Dunlea tells CNN's John Defterios. The E9 will play an important role in U.S. military strategy and operations from now on, Defense Secretary Chuck Hagel says.