WSA defines and allocates requirements, develops tailored engineering management processes, allocates system and process interface requirements, and maintains configuration control of interfaces and product baseline design. WSA performs trade studies to define requirements and allocates them to optimize design performance and control cost and schedule.WSA recognizes that change is an essential part of all product development. As a result, we are prepared for the inevitable-design improvements, requirements volatility, advancements in technology, and changes in the marketplace.