Ship - based system shoots down dummy missile from hundreds of miles away . The Integrated Missile Defense has 19 successful tests in 6 months , agency says . Both the sea-based and ground-based systems are part of the Pentagon 's `` layered '' missile defense plan . More than 100 U.S. Navy ships eventually will be equipped with system .
Ship - based system shoots down dummy missile from hundreds of miles away . The Integrated Missile Defense has 19 successful tests in 6 months , agency says . More than 100 U.S. Navy ships eventually will be equipped with system .