>> right. there is also a possibility that this is some sort of visual artifact that, both, humans and cameras could see. there's some scientists, who push that theory. although, the -- the pilots are very certain they -- they saw something. and there were repeated incidents. so, it's a frustrating -- like so many of these intelligence issues, it's pretty frustrating. we -- there's more unknowns, than knowns. >> so, even though the -- the government says there's no evidence this is alien spacecraft. i mean, what happens now? going to stop people believing something is out there. you know, ther...