The Joint Strike Fighter (JSF) is the world’s largest ongoing fighter project. AfterLockheed Martin Corporation won the JSF program with its X-35 design, the X-35 was renamed F-35. As planned, three different F-35 variants are developed simultaneously. They are the F-35A Conventional Take-Off and Landing (CTOL) variant, F-35B Short Take-Off and Vertical Landing (STOVL) variant and F-35C Carrier Variant (CV). The F-35 is named in honor of Lockheed Martin’s famous P-38 Lightning in World War II. Now it’s the most produced fourth-generation fighter in the world. Many countries have ordered, or are considering ordering it.