The Joint Strike Fighter (JSF) program is a multinational effort to develop a family of stealthy, advanced fighter aircraft. The primary aircraft produced under this program is the F-35 Lightning II, which comes in three variants: the conventional takeoff and landing F-35A, the carrier-based F-35C, and the short takeoff and vertical landing F-35B. The JSF aims to replace older fighter jets in the fleets of several countries, including the United States, United Kingdom, and Australia. It features advanced technologies such as radar-evading capabilities, sensor fusion, and networked warfare systems, enhancing combat effectiveness and interoperability among allied forces.