This position is located at the Rochester Community Based Outpatient Clinic in Rochester, Minnesota. Diagnostic ultrasound uses high frequency sound waves and other diagnostic techniques for medical purposes.. 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. See the grade requirements part of this standard for information regarding educational substitutions. Licensure or Certification. Licensure or Certification is not required for this occupation; however, it is strongly desirable at GS-6 or above as evidence of possess