I just had to retake this shot from three weeks ago. I was losing sleep over it. The first time, I happened across the spot accidentally and was unprepared, so the original was handheld at 50mm & f/1.2 @ 3200 ISO (with about 50% cropped out). This time, on a tripod at 105mm & f/2.8 @ 100 ISO (and slightly earlier in the evening). Check it out at full resolution and see if you can spot the SR-71 Blackbird.
You really want to click through; this is amazing.