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NNSA and Navy complete first W76-4B production unit

The US National Nuclear Security Administration and Navy announced completion of the first W76-4B production unit. The headline identifies work on a nuclear warhead variant but provides no further operational details.

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Why it matters

It concerns the US nuclear weapons stockpile and strategic deterrence posture.

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  1. NNSA, Navy Complete First W76 Mk4B Production Unit ↗executivegov.com · Recorded source date: Aug 21, 2026, 9:46 PM UTC

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