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GAO-14-414R 1 (2014-03-18)

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G      A             U.S. GOVERNMENT ACCOUNTABILITY OFFICE
441 G St. N.W.
Washington, DC 20548



March 18, 2014


The Honorable Carl Levin
Chairman
The Honorable James M. Inhofe
Ranking Member
Committee on Armed Services
United States Senate

Nuclear Command, Control, and Communications: Review of DOD's Current
Modernization Efforts

The nuclear command, control, and communications (NC3) system is a large and complex
system of systems comprised of numerous terrestrial, airborne, and space-based components
used to assure connectivity between the President and nuclear forces. The current NC3
architecture consists of systems that support day-to-day nuclear and conventional operations
prior to a nuclear event as well as thin line systems that are to provide survivable, secure, and
enduring communications through all threat environments. Though some are specific to the
nuclear mission, most NC3 systems support both strategic and conventional missions.

NC3 systems support five important functions:

* Situation monitoring: collection, assessment, and dissemination of information on friendly
   forces, adversary forces and possible targets, emerging nuclear powers, and worldwide
   events of interest.
* Planning: development and modification of plans for the employment of nuclear weapons
   and other options.
* Decision making: assessment, review, and consultation on the decision to use nuclear
   weapons and for supporting operations.
* Force management: assignment, training, deployment, maintenance, and logistics support
   of nuclear forces before, during, and after a crisis.
* Force direction: implementation of decisions regarding the execution, termination,
   destruction, and disablement of nuclear weapons.

The Senate Armed Services Committee report accompanying a bill for the National Defense
Authorization Act for Fiscal Year 2013 mandated GAO to assess Department of Defense (DOD)
efforts to sustain and improve the NC3 system.1 We addressed the mandate through three
separate engagements. We issued a report on the Family of Advanced Beyond Line-of-Sight
Terminals in December 2013. A second, classified report on operational assessments of the
NC3 system was issued in February 2014. For this third review, we assessed the extent to
which DOD is addressing known NC3 gaps or weaknesses and steps DOD has taken to
transform the current NC3 system to provide improved capabilities in the future.

1See S. Rep. No. 112-173, at 199 (2012).


GAO-14-414R Nuclear Command, Control, and Communications


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