>>508670788 (OP)Because despite what 50-year-old veteran-cap (he scrubbed the poop deck) Uncle Fred and 17 year old mystery meat LaShawn believe, they're not ours. The best US technology is pretty advanced, but it's falseflaggers suggesting we have antigrav totally silent spacecraft that can do 90 degree turns and hyper accelerate
It was never us. If we ever did capture a craft, we sure as hell never reverse engineered it.
But we'll say we did.