WASHINGTON – On December 18, 2024, the U.S. Department of Energy’s National Nuclear Security Administration (NNSA) completed the Last Production Unit (LPU) of the B61-12 Life Extension Program (LEP). The B61-12 is the latest modification to the B61 family of gravity bombs, which are deployed from U.S. Air Force and North Atlantic Treaty Organization bases. The B61 family of bombs has over 50 years of service, making it the oldest and most versatile weapon in the enduring U.S. nuclear weapon stockpile. The B61-12 LEP, which is critical to sustaining the Nation’s air delivered nuclear deterrent capability, extends the service life by at least 20 years through refurbishing, reusing, or replacing all the bomb’s nuclear and non-nuclear components
Read the full release on the NNSA website.