Squirrel update: the bushy-tailed rats seem to have retreated for now, after suffering more casualties. We spotted one squirrel bringing bits of branches and leaves onto our house, and soon discovered that she was trying to build a nest in one of our gutters, and using the downspout either as a hideaway or for access. We cleaned that out and blocked the downspout, yet the mother squirrel wound up giving birth to three pups in the gutter, which soon perished. Since disposing of the bodies, we've seen no further trace of her.
As for my wife: her air rifle arrived last night. She was busy this morning doing some target shooting and zeroing the sights. We will be setting up the squirrel pole this weekend, too.