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https://www.defensedaily.com/as-usaf-considers-when-to-hold-first-sentinel-flight-test-lockheed-martin-receives-add-on-for-mk21a/air-force/

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The U.S. Air Force is currently evaluating the timing for its first flight test of the Sentinel ICBM, while Lockheed Martin has received a nearly $454 million contract add-on for the Mk21A reentry vehicle, bringing its total contract value to nearly $1.5 billion. This development is part of the ongoing modernization of the U.S. nuclear deterrent capabilities.

 defensedaily.com exchangemonitor.com

Overview of the Sentinel ICBM and Mk21A Reentry Vehicle

The U.S. Air Force is preparing for the first flight test of the LGM-35A Sentinel intercontinental ballistic missile (ICBM), developed by Northrop Grumman. This missile is a key component of the U.S. nuclear deterrent strategy.

Lockheed Martin's Role

Lockheed Martin has been awarded a significant contract add-on worth nearly $454 million for the Mk21A reentry vehicle, which is essential for the Sentinel ICBM. This contract increases Lockheed Martin's total award for the Mk21A to approximately $1.5 billion. The work is expected to continue through September 2026.

Importance of the Mk21A

The Mk21A reentry vehicle is designed to carry the W87-1 nuclear warhead. It plays a crucial role in the modernization of the U.S. nuclear deterrent triad. The vehicle's design and technology are being developed using advanced digital engineering tools, which enhance efficiency and reduce costs.

Current Status and Future Plans

As the Air Force considers the timing for the first flight test, Lockheed Martin is focused on maturing the Mk21A design. The upcoming flight tests will provide critical data to inform future developments and ensure the reliability of the reentry vehicle.

 defensedaily.com news.lockheedmartin.com