Ann Arbor is a city of about 113,000 residents located west of Detroit, along Interstate 94.   The first known reverse sting in the city occurred in 1978.  In that two-day operation, 18 men were arrested and were released on bond.  They could have faced up to 90 days in jail and fined up to $100 at the time.  Reverse stings are still periodically conducted by police, due in part to complaints from local businesses.  A john school was established by a counseling center in Ann Arbor, but it served the neighboring city of Ypsilanti, so it is discussed in that city’s summary.