Who is primarily responsible for the use of wing financial services for both military and civilian personnel?

The Comptroller Squadron is primarily responsible for the use of wing financial services for both military and civilian personnel. This unit oversees the management of financial operations within a wing, ensuring that resources are allocated efficiently and effectively to support mission operations. They provide financial guidance, manage budgets, and facilitate the delivery of financial services to all personnel within the wing, thus playing a crucial role in maintaining fiscal discipline and accountability.

In contrast, the Financial Working Group typically focuses on gathering input from various stakeholders to enhance financial policy or address specific financial issues, but does not have primary responsibility for financial services. The Operations Group, while essential in executing the wing's missions, does not directly handle financial services. The Resource Management System, on the other hand, refers to processes or tools used for managing resources, rather than being a body responsible for financial services. Understanding the distinct roles of these different units clarifies why the Comptroller Squadron is the correct answer.