Here they are admitting the existence of objects that can move in ways no known propulsion system can allow, as verified by multiple independent radar systems. They're not confirming it's aliens, of course, just that there are unexplained aerial phenomena (UAP) that need to be studied further. It's tantamount to admitting aliens exist because the technology is beyond anything known to be from humans. I don't believe in alien visitations to our planet, but I'm trying to explain the report in an unbiased way.