Monitoring the health of the GIG is one of the most critical aspects of operationalizing cyber missions. This report focuses on the health of the Global Information Grid (GIG), a globally interconnected Department of Defense (DoD) network (of systems) that collects, processes, and manages information for warfighters, policymakers, and support personnel. The three primary components of GIG health (as defined by the customer) include sustainability, reliability and survivability. Sustainability is ...