PAC‑3 MSE Integration and the Future of U.S. Naval Missile Defense

April 27 2026

Demonstration of the PAC‑3 Missile Segment Enhancement integrated into the Aegis Combat System. Source: Lockheed Martin

The U.S. Navy is set to become the second U.S. service branch to operate the PAC‑3 Missile Segment Enhancement (MSE), joining more than a dozen allied partners currently fielding the interceptor. This expansion follows an April 21, 2026 Lockheed Martin announcement confirming the award of a long‑anticipated contract to integrate the PAC‑3 MSE with Aegis‑equipped...

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