I drive by the place at least once a week to go to one of my jobsites. He's bought an old army apartment building next door to house the fighters in. It's maybe 1000' from the front door to the gym.
I've never been inside the place, but I know a lot about the area. Best bet...don't head south (bad ghettos). The facility itself is very secure though as it's inside an old army base w/ a security guard or two patrolling the entire place 24/7.