Previous tests have been focused on a trajectory that mimics a North Korean missile . This test is made more difficult by the different trajectory of the incoming missile . In the January test , fake ICBM will be launched from the Hawaiian Islands . The missile will be launched from California , agency spokesman says .
Previous tests have been focused on a trajectory that mimics a North Korean attack . This test is made more difficult by the different trajectory of the incoming missile . In the January test , fake ICBM will be launched from the Marshall Islands . Interceptor missile will be launched from California , agency spokesman says .