The Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions, laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process, the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar, human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders, principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction.