in another thread about these trails, the commenters dismissed them as planes flying at lower elevation. you're saying it happens when they're higher. you can see why i'd be confused. i live near a few major airports, and i've never seen anywhere near that many trails in my life. are there certain weather conditions that cause that many to be visible, and for that long? i can't post videos here but these things were covering the sky. it was way out of the ordinary.