The Noncommissioned Officer (NCO) Promotion effort was undertaken to help the U.S. Army prepare noncommissioned officers to meet the needs of the future Army. In the earlier NCO2l project, concurrent validation evidence was collected to support the integration of measures of knowledges, skills, and aptitudes (KSAs) into the promotion system. This report documents the longitudinal validation of these measures. The predictor measures included the Leadership Judgment Exercise, Self-Description Inventory, Information Questionnaire-II, Experience and Activity Record, Work Suitability Inventory, and Personnel File Form. Observed and expected future performance rating scales were used to remotely collect criterion data via the Internet a little more than a year later. An additional criterion measure was whether participating Soldiers had been promoted during the project's research period. This project yielded some evidence supporting the longitudinal validity of the predictor measures and good evidence that the measures can effectively be administered via laptop computers.