The under development Chinese Chengdu J-20, and the Russian Sukhoi PAK FA are now providing more advanced fighters to compete with current American fifth generation jet fighters. Dubbed the "Next Generation Tactical Aircraft"/"Next Gen TACAIR", the USAF seeks a fighter with "enhanced capabilities in areas such as reach, persistence, survivability, net-centricity, situational awareness, human-system integration and weapons effects," a November 4, 2010 presolicitation notice states. “The future system will have to counter adversaries equipped with next generation advanced electronic attack, sophisticated integrated air defense systems, passive detection, integrated self-protection, directed energy weapons, and cyber attack capabilities. It must be able to operate in the anti-access/area-deni