"The 'Fiscal Year 2016 Stockpile Stewardship and Management Plan' (SSMP) is the DOE NNSA's [Department of Energy National Nuclear Security Administration's] 25-year strategic program of record for maintaining the safety, security, and effectiveness of the nuclear stockpile. The SSMP is published annually, in response to statutory requirements, in report or summary form, to support the President's Budget submission to Congress for Weapons Activities. It is also used to provide, where possible, NNSA's formal response to other congressional reporting requirements in order to present a single, integrated picture of current and future activities funded by the Weapons Activities account in support of the nuclear deterrent. Beyond meeting these specific requirements, the document contains information, descriptions, and explanations to provide greater transparency and understanding of what the nuclear security enterprise does and how it works in support of the Nation's stockpile."
U.S. Department of Energy: http://www.energy.gov/