From 1992 to 2000 I did outside sales, but had an office on N. Western not too far from the country jail, I would generally work in the office from about noon to 2pm every day doing paper work, there were 4 to 5 ladies that worked in the office, we had a walk up counter for customers that might need to drop by and pick things up, so the front door had to remain unlocked, the Gen Manager was there most of the time in his separate office next to the main counter.  He kept a loaded shotgun in his closet just in case, and they would have to call OKC PD 2-3 times a year to run off homeless that wandered in and wouldn't leave.