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FIGURE C-1 The Missile Defense Agency’s (MDA’s) Warfighter Involvement Process. NOTE: Acronyms are defined in the list in the front matter. SOURCE: Missile Defense Agency.

as funded in the PoR, in the Element/Component Characterizations for Analysis (E/CCA). The threat picture is also updated with the latest intelligence assessments. The E/CCA and the updated threat picture are the analytic basis for identifying gaps relative to the PCL. Element-level models such as the Aerospace Corporation’s System Performance Evaluation Tool (SPET) model for space-system tracking quality are used to generate element capability parameters that are used in BMDS engagement-level modeling (e.g., WILMA). These top-level models are used to generate the BMDS-level metrics, including defended area, raid capacity, probability of engagement success, among others. The MDA architecture team performs architecture assessment and proposes solutions to mitigate the gaps. These potential solutions are assessed for gap closure using the same modeling and analysis tools.

Proposed solutions are prioritized by senior MDA leadership, and the highest-priority solutions are selected for further requirements assessment, design work, and top-level costing. The element-level requirements process is unlike the JCIDS process in that the systems engineering and architecture process flows requirements down from the PCL rather than performance requirements being directly provided by the users. The lead services still provide Doctrine, Organization, Training, Materiel, Leadership and Education, Personnel and Facilities (DOTMLPF) requirements directly. The prioritized solutions are evaluated against the anticipated budgets, and the director-approved Achievable Capabilities List (ACL) is briefed to the Missile Defense Executive Board for final approval. The ACL is then provided to USSTRATCOM as a response to the PCL. The element program modifications and new program starts are approved by Office of the Under Secretary of Defense for



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