The U.S. Missile Defense Agency successfully shot down a dummy warhead in space over the Pacific Ocean Tuesday during a test of a missile defense system that would protect the country from intercontinental ballistic missiles like the ones being developed by North Korea.

“During the test, an ICBM-class target was launched from the Reagan Test Site on Kwajalein Atoll in the Republic of the Marshall Islands,” said a statement from the agency. “A ground-based interceptor was launched from Vandenberg Air Force Base, California, and its exo-atmospheric kill vehicle intercepted and destroyed the target in a direct collision.”