Russian fighter shot down own S-70 drone over Ukraine. This type of drone is still in development and used as a pilotless weapon platform, an expansion of firepower per pilot basis. One pilot in a Su-57 can control a few of these.
Now the AFU (therefore the USA) has the wreckage, free to study this new system. What Bernd thinks, how much this matters? The West has experience with these types of airframes, and trick is in the control tech, the programs that enables these drones.
https://www.twz.com/air/why-did-russia-just-shoot-down-its-own-fighter-sized-s-70-hunter-drone-over-ukraine