On Thu, 08 Feb 2018 00:08:18 -0500, Davoud wrote:

My point is that the reason you can't name a "high-altitude hypersonic
surveillance aircraft" is that there are no such aircraft in existence.
(Outside the fevered minds of a few conspiracy theorists, that is.)

Maybe you should update the wiki entry:

https://en.wikipedia.org/wiki/Lockhe...bird#Successor

Para 1 Sentence4: [...] Thus, there are doubts that the US has abandoned
the concept of spy planes to complement reconnaissance satellites.