I tried a lot of different phrasings to include that the release may have been inadvertent, or that there's nothing first-hand, &c. None of them would fit, or f

I tried a lot of different phrasings to include that the release may have been inadvertent, or that there's nothing first-hand, &c. None of them would fit, or fit without linguistic gymnastics, so I went with simple. I probably could've kept the question mark. As for "confirming", as I said in an earlier comment, this isn't official confirmation. It's just the release of documentation of a conversation where the phrase "flying saucers" was used in apparent seriousness by someone who claimed to know.