A C-5 or B-2 flying at night can look a lot like a flying triangle due to the configuration of the lights. It’s around Scott AFB and the pilots might have been shooting an approach to keep their night-flying quals up to date.
Also, the 200 foot estimate on the altitude is a pretty shaky. It’s very difficult to judge the altitude of an object during the day, especially if you don’t know how big it is. It’s impossible to do at night without equipment or some type of reference points.
I’m not saying that this isn’t a valid UFO or stealth aircraft sighting. I’m just saying that they would need to rule out the more mundane things first.
Sorry about the double post. I’m not sure how that happened.