Salmon don’t retire; they expire. In the fall during the annual run, I wander the network of natal Chinook streams observing the primordial fish spawn. While the female of the species builds her redd, males fight for her affections. When all the milt and all the eggs have been released, there is nothing for salmon to do but decay into the swimming dead and finally settle to the stream bed to provide nutrition for their yet-to-be-hatched offspring. Nowhere…