Re: History rehashed of the famous Washington saucers:
https://www.history.com/news/ufos-washington-white-house-air-force-coverup

I propose that this was a demonstration. President Truman had similarly ordered a demonstration of the Flying Wing to prove its airworthiness, so it was flown over Washington in 1949. He could have also demanded a demonstration of the saucers, an above-top-secret U.S. military platform, perhaps to justify funding and answer doubts about their superior performance.

But I’m not telling you anything you don’t already know! It’s all in Flying Saucers.