This link will take you to the FAA Inspector's Handbook where the procedures to be undertaken for the Special Emphasis Inspection of US EMS Operators is set forth.
Unless I have missed something....all I read is the word "One" as in "once" for each type of inspection or audit. They are getting aggressive here are they not?
http://www.faa.gov/library/manuals/e.../N8000-307.doc