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Army

Lockheed Martin Completes First Operational Test Phase For A4 Radar

By Cal Biesecker

Monday, February 2nd, 2026

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Lockheed Martin Completes First Operational Test Phase For A4 Radar

Lockheed Martin Sentinel 14 air and missile defense radar. Photo: Lockheed Martin

Lockheed Martin [LMT] on Monday said it has completed the first phase of Initial Operational Test and Evaluation (IOT&E) of the Sentinel A4 radar for the Army’s Sentinel A4 air and missile defense radar. The operational testing phase is a key milestone on the path to full rate production of the radar. The initial testing phase involved an A4 integrated with the Forward Area Air Defense Command and Control platform to validate effectiveness of the open architecture design and interoperability…

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