Lockheed-Boeing team pitch Defiant X, its candidate for the Army’s long-range assault helo competition January 25 Lockheed Martin and Boeing unveiled its offering to the U.S. Army's Future Long-Range Assault Aircraft competition Jan. 25, 2021 -- calling it Defiant X. (Artistic rendering courtesy of Lockheed Martin and Boeing) The modified, competition-ready aircraft design is being called Defiant X, taking the same surname as little brother Raider X, which is Lockheed’s submission for the Army’s other helicopter competition — the Future Attack Reconnaissance Aircraft (FARA) program — running nearly in parallel. Both aircraft build off and scale up from Sikorsky’s X2 demonstrator which flew for the first time in 2008.