The quality of a military workforce, or any workforce for that matter, depends on the quality of its people. Successful attainment of military missions requires a force composed of dedicated, knowledgeable, and competent members. When an organization can hire persons with prior experience, an evaluation of past performance can serve as the primary criterion for selection and assignment into jobs. Other characteristics such as aptitudes and education assume less importance. However, when organizations hire young people without job experience, it becomes important to evaluate aptitudes, education, interests, and other characteristics known to predict success in jobs sought by the applicants.