Chinese Stealth Tech- many think China borrowed fighter technology. I also think it would be foolish not to use proven ideas. Plus if your designs can be taken the only main advantages are strategy and training. This where the majors have the edge.
This is funny to me. Why, you ask? The person before me typed in "secret agent code!" As the description. Hey person, do you live under a rock? Why don't you try "Phonetic Alphabet" which happens to be used by the military and police force?