First Look at Land-Based Aegis Missile Defense System in Guam
22nd October 2024
We have gotten what appears to be our first view of a Mk 41 vertical launch system (VLS) for the Aegis Ashore air defense system that has been installed on the highly strategic American island of Guam in the Pacific. The land-based Mk 41 launchers are one step toward addressing the vulnerabilities of the U.S. military bases on the island to attack — something that China, in particular, has directly referenced in the context of a full-scale conflict in the region. Ultimately, Aegis Ashore on Guam will be just one element in plans to make the island’s airspace the most heavily defended anywhere on Earth.
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Aegis Ashore is primarily designed to engage ballistic threats during the midcourse portion of their flight outside the Earth’s atmophere using SM-3 interceptors. However, the Mk 41 is a modular launcher, meaning that additional anti-missile interceptors, such as the terminal-stage intercept and anti-air SM-6 and the forthcoming Glide Phase Interceptor (GPI), which could also be added. With its ability to take down certain incoming hypersonic threats, as well as other weapons, the GPI could be especially relevant for the defense of Guam. With additional launchers, even dispersed around the island, shorter-ranged missiles, such as the Evolved Sea Sparrow Missile (ESSM) Block II and even the latest SM-2s, could feasibly provide protection against air breathing threats, such as cruise missiles and drones. Patriot interceptors are now also now a possibility.