It was high-fives all around for the crew of the Japan navy destroyer JS Myoko when they found out about their successful hit-to-kill, missile-to-missile intercept conducted just after 6 p.m. Tuesday.

It involved the Japanese Maritime Self-Defense Force destroyer JS Myoko (DDG 175) detecting and tracking a mock enemy missile launched from the U.S. Navy Pacific Missile Range Facility at Barking Sands near Kekaha, then firing a missile to hit to kill the mock enemy missile.

The JS Myoko is the fourth ship in the Japanese navy to be equipped with the Aegis missile-defense system, and Tuesday’s was the first “no-notice,” real-time firing test of that ship’s system and crew, according to a U.S. Missile Defense Agency spokesperson.

Another test is tentatively scheduled for next year. The JS Myoko has departed for O‘ahu’s Pearl Harbor, where it will pick up a load of Standard Missile-3 (SM-3) missiles that it could be called upon to fire against a potential North Korea hostile missile upon its return to Japanese waters.

During Tuesday’s test, the U.S. Navy ships USS Paul Hamilton and USS Lake Erie, both out of Pearl Harbor, detected and tracked the target missile for training purposes.