United States Government Accountability Office Washington United States
NNSA is simultaneously modernizing the nations nuclear weapon stockpile and the infrastructure on which weapon programs depend. In a 2019 report, NNSA stated that this is the busiest time for the nuclear security enterprise since the Cold War era. GAOs April 2017 review of NNSA nuclear modernization programs concluded that NNSA made optimistic assumptions about future costs. DOD and DOE estimate that nuclear modernization will cost hundreds of billions of dollars over the next decade. This statement is based on 18 GAO reports issued from July 2003 to February 2020 and selected updates. It discusses 1 NNSAs ongoing and planned programs and projects to modernize weapons and related infrastructure and challenges they present 2 NNSAs improvements in managing these programs and projects, and additional steps NNSA could take to make further improvements and 3 GAOs prior recommendation to NNSA on assessing the affordability of its portfolio of modernization programs. To conduct the updates, GAO reviewed DOE planning and budget documents.