(CNN)The Pentagon's Missile Defense Agency successfully launched two ground-based missile interceptors in rapid succession Monday from Vandenberg Air Force Base in California against a simulated intercontinental ballistic missile launched from a test site on the Kwajalein Atoll in the Pacific, according to a statement by the US Missile Defense Agency.

It was a critical test of US missile defenses against adversaries such as North Korea.

The goal was to create a scenario in which the US would fire multiple defensive missiles rapidly if an enemy had initiated a missile launch at the US. Monday's test was to ensure that if multiple missiles were in the air, the sensors of the US ground-based interceptors would be able to distinguish the enemy's incoming missiles from other missiles and electronic clutter in the environment.