Clearly misdirection. The question is, what are they hiding? The Navy decided to admit these craft exist then misdirects about how they work. My guess, they're

Clearly misdirection. The question is, what are they hiding? The Navy decided to admit these craft exist then misdirects about how they work. My guess, they're nuclear powered aircraft of some kind. Maybe conventional besides that, maybe not. You can get such obscene power density with nuclear that the ideal craft may just be an engine with a cowling around it. Efficiency is not a concern so nuclear aircraft are going to look a lot different. It's the only reason I can think of that Navy would be trying to cover up how they work. The idea of nuclear reactors zipping around in the air is terrifying.