Work completed on Navy’s upgraded nuclear warhead

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WASHINGTON — The National Nuclear Security Administration has completed work on an updated nuclear warhead for the Navy, the first in a series of major life-extension programs for America’s arsenal.

The NNSA announced today that as of December, all of the Navy’s W76-0 warheads, introduced in the late 1970s, have been updated to the W76-1 design. The W76-1 warhead is placed on the re-entry vehicle for the submarine-launched Trident II D5 ballistic missile.

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