6151 Portage Road in Kalamazoo, MI. They're just off I-94 (exit 78) at the Kalamazoo/Battle Creek International Airport.
From DeWitt, take I-69 south to I-94, then west on I-94 to exit 78. Go south on Portage Road, past the airport to Milham Road, turn left and proceed to the Education & Research Facility