Sources: Ford Field to be used as regional mass vaccination site Michigan COVID cases up to 581,403 Updated: Tags: Sources in Wayne County said that FEMA has not yet defined what “regional” means. Detroit police were quietly providing security outside of Ford Field on Monday while inside a team from FEMA got a close look. The Federal Emergency Management Agency wanted to see Ford Field up close and plan with Wayne County government officials about using the 65,000 seat stadium as a COVID-19 mass vaccination site. FEMA wants Ford Field up and running for vaccinations by mid-March. The goal is to get 6,000 people in each day at first.