The Chinese air force showed its new low-observable, or "stealth," fighter in public for the first time Tuesday. The aircraft has been the subject of heated debate in air power circles for many years as Chinese military bloggers leaked images of the various preproduction prototypes. The main questions being asked now are how much of a threat does the J-20 pose to American dominance of the skies in the Asia-Pacific region, and how much of a shift does the aircraft represent in terms of China's military capabilities? Read more