The Initial Threat Environment Assessment provides capability developers and Program Managers (PM) the ability to assess mission needs and capability gaps against likely adversary threat capabilities at Initial Operational Capability (IOC). It forms the basis for the initial System Threat Assessment Report (STAR) at Milestone A, and is superseded by the Milestone A STAR. The assessment is also used to support the Materiel Development Decision (MDD) and the Analysis of Alternatives (AoA).
REGULATORY: for anticipated Major Defense Acquisition Programs (MDAP) and Major Automated Information Systems (MAIS) programs; optional for all other programs at the discretion of the Milestone Decision Authority (MDA) and in consideration of Intelligence Community resources. 
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