The incumbent works in the Cardiology section of Medicine Service. The sonographer has the intimate knowledge of thoracic anatomy and physiology as related to cardiovascular function. 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 qualified citizens in accordance with VA Policy. Education: There are no specific educational requirements for this occupation. Education may be substituted for experience only at the GS-4 and GS-5 levels. Licensure or Certification: Licensure or Certification is not required for this occupation; however, it is str