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An MK-15 Phalanx close-in weapon system is fired during a live-fire exercise aboard Nimitz-class aircraft carrier USS Nimitz (CVN 68) in the Pacific Ocean, March 9, 2026. Nimitz is underway in the U.S. 3rd Fleet area of operations as part of a scheduled homeport shift to Norfolk, Virginia. (U.S. Navy Photo by Mass Communication Specialist 2nd Class Peter K. McHaddad)