In March 2021, U.S. Marines in Japan and Hawaii teamed up with joint partners to execute networked Expeditionary Advanced Base Operations (EABO) spanning five separate islands in a complex display of modern littoral warfare. Exercises Castaway 21.1 in Japan and Spartan Fury 21.1 in Hawaii demonstrated the ability of the Marine Corps to integrate with the joint force to seize and defend key maritime terrain, provide low-signature sustainment, and execute long-range precision fires in support of naval operations from expeditionary advanced bases.
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