[Sirius Lee]

But I think BLC is better described in fluids as the observed ability of trout to hold position seemingly motionless against the current of a stream.

Sounds like you're talking about the work of Viktor Schauberger who worked for the nazis.

[garryowenartillery]

Why yes...no aliens, just Germans.

[Kevmo]

No, numbnuts. It was the work of aeronautical luminaries like Ludwig Prandtl and Oscar Schrenk. As has already been posted to you. But your preference is to remain ignorant.