Thanks everyone. Your comments are much appreciated.
As for AA, I'm pretty sure he would disavow any association with my efforts. But I can claim one similarity, in the way that he described happening upon the scene where he captured the famous Moonrise, Hernandez New Mexico image: "We were sailing southward along the highway not far from Espanola when I glanced to the left and saw an extraordinary situation – an inevitable photograph! I almost ditched the car and rushed to set up my 8×10 camera."
That's almost exactly what happened to me here, including noticing the scene over my left shoulder, and screeching to a quick halt on the side of the road. No ponderous 8x10 camera to set up, though; just my little Oly EM-1.