The SV-3, or System View 3, is a model used in systems engineering to represent the operational aspects of a system. It provides a visual framework that helps stakeholders understand how different components interact and function together within a system. This model is particularly useful for analyzing system requirements and ensuring that all parts work cohesively. In the context of the Department of Defense, the SV-3 is part of the Unified Architecture Framework, which aims to standardize the representation of systems. By using the SV-3, engineers can effectively communicate complex system behaviors and facilitate better decision-making throughout the development process.