Nuclear Gravity Bomb and Warhead Upgrades Face New Delays

WASHINGTON ― The United States' B61-12 nuclear gravity bomb may face an 18 month delay during production, with the W88 submarine-launched ballistic missile warhead facing a shorter delay, a top National Nuclear Security Administration official confirmed Wednesday.

The B61-12 life-extension program consolidates and replaces the older B61-3, -4, -7 and -10 variants, while the W88 Alteration 370 is meant to replace the arming, fuzing and firing subsystem for the W88 warhead for the Trident II sub-launched ballistic missile. The two are among five major modernization programs underway at the agency.

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