The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, all-weather stealth multirole combat aircraft that is intended to perform both air superiority and strikemissions. It is also able to provide electronic warfareand intelligence, surveillance, and reconnaissancecapabilities. Lockheed Martin is the prime F-35 contractor, with principal partners Northrop Grumman and BAE Systems. The aircraft has three main variants: the conventional takeoff and landing(CTOL) F-35A, the short take-off and vertical-landing (STOVL) F-35B, and the carrier-based(CV/CATOBAR) F-35C.