Who among the listed individuals does not have a designated role?

The individual identified as Victor Diaz does not have a designated role, indicating that he may not be currently serving in a specific capacity within the structure being assessed. In organizations like JROTC, every member typically has a defined role that contributes to the unit's function and effectiveness. This structure is vital for ensuring that responsibilities are clear and each member knows what is expected of them. Roles can range from leadership positions to specialized tasks, and having someone without a designated role might suggest that they are in a transitional phase or are awaiting placement in the organizational hierarchy. The context of the other individuals—Amber Montanez, Adrian Perez, and Valena Tafoya—indicates that they currently fulfill specific responsibilities, which highlights the importance of having designated roles within a team for optimal performance.