Is this the offspring of the SR-71 Blackbird spy
The Lockheed SR-71 was an advanced, long-range strategic reconnaissance aircraft capable of reaching Mach 3 (3,675 km / h).
According to rumors, Skunk Works Secret Division of Lockheed Martin (who also developed SR-71) is working on an advanced spy plane called SR-72 for the US Army. It looks like it will be able to reach a maximum speed of 7,400 km / h. A Lockheed official would have confirmed at a conference that they are working on such a flight apparatus.
The images were published on the YouTube SecureTeam10 account, which frequently publishes clips of unidentified flying objects