I am involved in birding. I know a fellow birder dude who recently decided to go about learning the process of navigating the red tape of how to gain access to the ranges at JBLM.
So, how this relates to fishing is that there are bodies of water on many of these ranges within Ft. Lewis/McChord, etc.
When I was stationed in Fort Ord. CA. back in the mid 80's, we used to find these places all the time. These places sometimes had great fishing opportunities, due to the lack of fishing pressure.
I had been told about such locations on Lewis, but I didn't want to begin the nightmare of figuring out access passes.
If anyone is interested in a tutorial on exactly where to go to get a Range Pass, you can check this site out;
http://www.jblmbirding.com" onclick="window.open(this.href);return false;
Time to get out Google maps, and start looking for blue spots.
disclaimer: Obviously these are Ranges that have been shut down to training, or at least have been stamped with an approval of safety for people walking around. But of course, you prob. want to not pick anything up.
