The Department of Defense (DOD) is in the midst of transforming military capabilities. The transformation relies in part on the Global Information Grid (GIG), which is focused on building a new Internet-like network capability that DOD envisions will enable weapons and other systems and people to share information quickly, allowing warfighters to identify threats more effectively and to respond with greater precision and lethality. DOD plans to spend at least $21 billion through 2010 to build a core GIG capability. GAO was asked (1) to describe the GIG, including the concept, key acquisitions, and implementation and (2) to identify significant challenges facing DOD in implementing the GIG.
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