Huge Black Triangular Flag Object Hovers, Moves Fast.

Location of Sighting: Boise, Idaho
Date of Sighting: September 15, 2021
Time of Sighting: 11:55 AM MDT

Description: I was driving up Bogus Road and just went by the old Horse Corrals Trail Head. I looked of towards the airport to the south and saw in the smoky haze a HUGE looked to be flat black rectangle flag! The smoke made it hard to see any detail as to how thick it was, but it was at least 2 to 3 city blocks high and 5 to 8 blocks long! It hovered and then moved as fast or faster than a jetliner. The road went down a hill and I lost site of it. I started speeding to get to a better vantage point to take a video. I turned that sharp corner and gassed it up the hill. I could see it in my rearview mirror. It was as far south I figure as the airport in Boise. I should have stopped and turned around right away. The slow vehicle vantage point was blocked by a small ridge to the SE. I never saw it again. Did anyone in the Boise, Nampa, Caldwell area see this monster? I thought it might be a plane pulling a huge banner, but it was going too fast for a plane and it was way too BIG. The trailing rear edge didn’t look square at a slight angle and uneven. It flew with a 15 to 20 degree upward tilt to the front of it.

Note to Commenters: If you are reporting a sighting, be sure to include the location (city, state, country), date and time of your sighting. Be detailed in your description. You may also use our report form to report your sighting. Comments will only be published if they are in "good taste" and not inflammatory. Also the name that you list in the comment will be posted. Use abbreviations or aliases if you don't want your name listed.