I had no idea what I was getting into when I created an account at geocaching.com. I didn't really want everyone knowing too much about me because I hadn't yet met the multitudes of nice cachers around Fort Worth. I thought , scratched my head , pondered , ruminated , cogitated and finally ask the wife . She said "Well you used to be a navigator on a KC-135, why not ex135navigator". And so it was. After nearly 500 caches, I shortened it to ex135nav.