Sorry, I see you replied before I edited that out. Apologize. They may not want to reveal details, but even not to the various Congressional committees for more funding (among many reasons) to fight back the enermy? The U.S. Congress could publicly condemn these kind of bad doings by China without publishing details. Plus, in the U.S. information has lots of ways to leak out, from Snowden to some pesky jounalists.