Cross-Country Pursuer

I am on a cross-country drive. I have stopped somewhere in the Midwest to visit friends. After I'm done there I have a stop in Kansas and then it's on to Colorado for a long visit with all my old friends. I go to the company where they all work together. My friend R is leaving the parking lot with a car full of friends just when I'm leaving. I ask if anyone wants to ride with me, and then they can show me the way. Two guys volunteer. We go around the building to the parking lot, but I can't find my truck. We go into a parking garage looking for it even though I know I parked outside. The parking garage is full of twists and turns and doesn't really make much sense. I am still in the structure, but I'm now following narrow passages and stairways trying to escape from someone following me. The building is now at a school, but I'm not sure what it's for. I stumble upon an abandoned room where someone has set up house, but I know they're just squatting, probably unable to afford a "real" place to live, but they've done a great job of making this hidden space comfortable. I continue running from my pursuer, a burly man who seems always just a half step behind me. I push through ceiling tiles, I open doors I don't go through to trick him, I can't ever seem to get a good lead. At some point I realize I'm dreaming and decide to change the dream, but I have a difficult time of it and eventually just wake up.

Note: As a long time nightmare sufferer, I finally taught myself to change the tenor of dreams in college. I got quite good at it. Unfortunately my skills are a bit rusty since I no longer have as many nightmares (but that's a good thing).