The one-legged feller worked there before Murphy started growing... back when it was a country drive on crappy 2-lane blacktops to get there from Richardson, where I grew up. I think he actually did make Chief at some point. He got along okay on his prosthetic, but I doubt he'd be chasing anyone down on foot.
If you know where the little Hogg Cemetary is at the NE corner of Skyline (I think) and Murphy road down south of where Renner Road now comes out, I had an uncle that lived on the property on which the cemetary sits some years back. (I wonder if they've bulldozed the cemetary for housing yet...) You could see his workplace - Rockwell International "way out" on Renner road - from his house. The last time I drove through Murphy, I could barely recognize it. I was amazed at the fact that what was once beautiful country on the Richardson side of Murphy road was now nothing but houses. Of course, I'm amazed at what Little Elm (where I live), Frisco, McKinney, Plano, and just about every other suburb around here have become in the past five years or so.