They will return it after they reverse engineer it and copy all of the technology.
Too bad it wouldn't detonate when they tried to open it up.
Years ago, when the Sidewinder AA missile was being displayed at an air show, I asked the AF guy why someone couldn't just open up a captured piece and copy the works. He said that at soon as the first screw was turned, all the electronics were fried.
Hope something like that is involved here, but if this was made under the obama administration . . .