What aspect is NOT part of an NCOER?

The Supplemental Evaluation is not a standard component of the NCOER, which stands for Non-Commissioned Officer Evaluation Report. The NCOER is a primary tool for assessing the performance and potential of non-commissioned officers in the Army. It includes key elements such as Overall Performance, which evaluates how well the NCO has met their duties and responsibilities, and Army Values, which assesses the individual’s adherence to the core values of the Army. Authentication is also included, providing verification of the report's contents and ensuring that it is officially recognized. In contrast, a Supplemental Evaluation is not part of the standard NCOER format; rather, it may refer to additional notes or evaluations that do not form part of the core report. Therefore, this option is correctly identified as not being a part of the NCOER.