Hey All -
Just FYI that I found a yellow jacket nest while climbing at Discovery Wall a couple days ago. It is about two thirds of the way up Here Comes The Judge, in a hand jam pocket along the corner. I "found" it when I reached into the pocket and got stung, then quickly moved left as a dozen hornets angrily buzzed out to protect the site.
I climbed Broken Arrow Direct before that, and Verdict after, and the yellow jackets seemed pretty focused at Here Comes The Judge and disinterested in activity away from the site. However, it looked like they may be just starting to establish the nest, so be warned if you're thinking of climbing in the area, especially if you're allergic to bees/wasps.