This is another original character of mine: A mentally ill postman named Gordy who will be added to the "John's Delirium" series and many other games that take place in that same course of time in fiction.
As you can see, Gordy could have been rewarded by the FBI for turning in John's letters, but John has offered him a much greater reward.
Postmen can be some of the most stressed-out high-strung people. That's why they call it "Going Postal" when someone flies off the handle and starts messin' people up.