Red and white alternate blinking lights, erratic trajectory, high in the skyI've seen this several times before. It may be a satellite, but it was moving erratically across the sky which I don't know if satellites do. It has red and white blinking lights, possibly on opposite sides of the object, so it makes it a little difficult to tell in which direction it's travelling at ny one point. After watching carefully this evening, however, the object, which appeared to the south and west of Holt, very high in the sky, was moving in such a jerky and erratic fashion that it drew my attention. It wasn't moving straight at all, but seemed to be moving from side to side in a zig zag pattern, like someone crossing over stepping stones to cross a creek. It moved from SE to NW, then veered off E, then N. Like I said, I've seen something like this several times before. I usually sit on my back porch in the evening to smoke a cigarette (have a grandbaby in the house, so I don't smoke around her). And NO, I wasn't smoking anything else:-). Anyway, this has begun to puzzle me, so I looked up several key words on the internet, and am surprised there don't seem to be any regular explanations to them. Couldn't it be like a satellite or a surveillance vehicle (not that THAT would be a comfort...)? At one time, I could have sworn I saw one of these blinking red and white light things do a U-turn in the sky, but don't think that's possible, going at that velocity! I see these at least several times a week, so I'm inclined to believe there's a good explanation--I just don't have a clue what it might be. It's so high in the sky, and must be moving so fast to proceed across as it does--I just can't explain how something moving that fast could change course so quickly. I'd sure appreciate any logical explanation that you could give me. Thanks.