From The Truth About Guns:

The Revere Police Department notes on its website that applicants need three letters of recommendation that are not from family members and that are written by people “of good moral character and must have known you for at least five years.” In periods for which numbers are available, Revere’s waiting period has been relatively long, in some cases up to more than 120 days, whereas the wait in some of its neighboring suburbs are on average one-quarter that long.