I never implied a "conspiracy theory" and merely posted the YouTube video to show what I was seeing. But since it was brought it up, when's the last time you saw a contrail that stopped and then started again? Whatever it is/was appears to be over for the day. What I am seeing now are flights coming in for landing at Metro from the south and the north, but nothing from the east and west. Chemical spraying? I doubt it too, but there must be some explanation for this grid pattern. Maybe it's mapping photography, weather related, who knows. It's something I've never seen before.