The USS John Finn launches a Raytheon Standard Missile-3 Block IIA missile to destroy an ICBM off Hawaii on Nov. 16, 2020.

A missile made by Tucson-based Raytheon Missiles & Defense destroyed a mock intercontinental ballistic missile over the Pacific Ocean near Hawaii β€” a key milestone in the effort to meet the threat of long-range missiles launched by North Korea or other adversaries.

During a test conducted Monday night northeast of Hawaii, the Navy guided-missile destroyer USS John Finn launched a Raytheon Standard Missile-3 Block IIA that intercepted and destroyed a β€œthreat-representative intercontinental ballistic missile target” launched from a test site in the Marshall Islands, the Missile Defense Agency and Raytheon announced Tuesday.

Though the MDA’s ground-based missile defense system has successfully intercepted ICBMs in tests, Monday’s test was the first intercept of an ICBM target by Raytheon’s SM-3 Block IIA, the latest generation of its ship-based SM-3 interceptors.

A look at Tucson in the early days from the air or from the tallest building. Produced by Rick Wiley / Arizona Daily Star

The USS John Finn used data from a system linked to a global system of radars and sensors, also used by the ground-based defense system, to track the target and launch its interceptor before the target was within its radar range in a process known as β€œengage on remote,” the MDA said.

β€œThis first-of-its-kind test shows that our nation has a viable option for a new layer of defense against long-range threats,” Bryan Rosselli, vice president of strategic missile defense at Raytheon Missiles & Defense, said in prepared remarks.

Space-based sensors made by Texas-based Raytheon Intelligence & Space detected and tracked the target and relayed the data to commanders, β€œin a demonstration of space-based early warning,” the company said.

MDA Director Vice Admiral Jon Hill called the successful intercept β€œan incredible accomplishment and critical milestone” for the SM-3 Block IIA program, which is part of the primarily ship-based Aegis Ballistic Missile Defense system.

Hill said the MDA is studying the possibility of augmenting the Ground-based Midcourse Defense system, which uses large interceptors housed in ground silos in Alaska and California, by fielding additional sensors and weapon systems β€œto hedge against unexpected developments in the missile threat.”

Co-developed with Japan, the SM-3 IIA is a larger, faster and more capable version of the SM-3 IA originally deployed aboard U.S. ships in 2011 for missile defense of Europe and the upgraded SM-3 IB deployed in 2014. The SM-3 is also deployed at a ground-based β€œAegis Ashore” site in Romania, with now-delayed plans for another site in Poland.

The recent test flight was the sixth of an Aegis BMD- equipped vessel using the SM-3 Block IIA missile and was originally scheduled for May, before it was delayed due to COVID-19 restrictions, the MDA said.

The test satisfied a Congressional mandate to evaluate the feasibility of using the SM-3 Block IIA missile β€” originally designed to hit intermediate-range missiles β€” to defeat an ICBM threat by the end of 2020, the agency said.


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Contact senior reporter David Wichner at dwichner@tucson.com or 573-4181. On Twitter: @dwichner. On Facebook: Facebook.com/DailyStarBiz.