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.
An uncommon view of a Superfortress, a four-engine propeller-driven heavy bomber designed by Boeing that was flown primarily by the United States toward the end of World War II and during the Korean War.
Keep close to Nature's heart. and break clear away, once in awhile, and climb a mountain or spend a week in the woods. John Muir Take a course in good water and air; and in the eternal youth of Nature you may renew your own.