As the Defense Department's projected resources shrink, its Integrated Air and Missile Defense system must become more joint and interoperable and take advantage of partner nation capabilities, while development should be focused on staying ahead of adversaries' emerging technology, according to the Joint Chiefs of Staff's Joint Integrated Air and Missile Defense Vision 2020 . The vision document, sent last month by Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey to the Pentagon's acquisition czar, the service chiefs,...