I drove about 3/4 of a mile past this scene right at dusk before thinking, "What am I doing?" The light was fading fast and I knew I had to hurry, so I "whupped" the car around and flew back to that field, praying that the horse would still be there and that it wasn't already too dark for a good exposure. I whirled the car around and parked in the only possible location where I wouldn't block traffic (there was none on that country road, fortunately). I shot out the driver's side window with the ISO set to 2000 and the lens zoomed to the max (140 mm). That's all I recall about the exposure, because I was working very rapidly (I hate being rushed like that but I knew I had to work fast or the light would be gone). It was my 80th birthday. I think the horse and I were the same age.