Employees are trained to work in one or more difficult and complex modalities performing procedures related to these modalities as well as performing general diagnostic procedures. At this grade level, any assignment in a single modality must demonstrate significant complexity. Such assignments are unique, perhaps with expert specialization in complex areas of radiologic technology, Mammography Quality Standards Act (MQSA) regulations, and intermediate QM type duties within the program. Applicants pending the completion of educational or certification/licensure requirements may be referred and tentatively selected but may not be hired until all requirements are met. Basic Requirements: United States Citizenship: Non-citizens may only be appointed when it is not possible to recruit qualifie