They have. Even during the congressional hearings on the subject they were talking about and referencing many already fully debunked UAP sighting footage
Except some of those would be necessarily suppressed because "it's the X-57" might be the sort of thing you don't want to release a picture of (nor say, F-22 doing some manoeuver we don't acknowledge it's capable of - in NATO exercises F-22 pilots are instructed to limit their flying to keep some of the plane's capabilities secret).
