Previous tests have been focused on a trajectory that mimics a Iranian attack . This test is made more difficult by the different trajectory of the incoming missile . Missile defense tests have been likened to hitting a bullet with a bullet . In the more than three years ago test , fake Lehner will be launched from California . Interceptor missile will be launched from the Marshall Islands , agency spokesman says .
Previous tests have been focused on a trajectory that mimics a Iranian attack . This test is made more difficult by the different trajectory of the incoming missile . In the more than three years ago test , fake Lehner will be launched from California . Interceptor missile will be launched from the Marshall Islands , agency spokesman says .