One of the highlights of the Blue Angels’ demonstration is the Sneak Pass. The main formation heads off in one direction and the crowd’s attention follows them. Meanwhile, one of the pair comes running in at high speed and low level from the left catching many people by surprise. Just as this is done, the other of the pair comes at high speed from crowd rear and most people jump again. I am most interested in the first pass because it offers a couple of possibilities. If the atmosphere is humid, you can get some vapor on the jet around the shock waves and expansion fans. If there is a background other than the sky, the other opportunity is to have the refraction from these phenomena distorting whatever is behind.
Seafair does provide a background with Mercer Island providing the backdrop to the pass. The downside is that the display line is a long way out over the lake, so you are stretching the reach of lenses to get a close enough look at the jet. This year I did have the benefit of the long end of the 200-800 so I could get something of the shot I was after. Perhaps not the best of shots but at least there is something of the refraction to see.