milestones for ACAT I (MDAP) to ACAT III programs. Additionally, Valkyrie personnel focus on design reviews from System Requirements Review (SRR) to Critical Design Review (CDR). Staff personnel also participate in Analysis of Alternatives (AoA) requirements development and the tracking of requirements allocation through Dynamic Object Oriented Requirements System (DOORS). Valkyrie provides engineering support for open architecture design, development, and deployment through the Aegis modernization program. For new ship construction, their Post Delivery Test & Trials engineers support every aspect of delivery of the ship from sail away to Final Acceptance Trials.