The F-35 is a fifth-generation multirole fighter aircraft developed by the United States in partnership with several other countries. The F-35 is designed to be a versatile and highly capable platform for air-to-air combat, air-to-ground strikes, and intelligence, surveillance, and reconnaissance (ISR) missions.

The F-35 program has been controversial due to its high cost and technical issues during development. However, proponents argue that the F-35's advanced technology and capabilities make it an essential asset for modern military operations.

The F-35 is currently in use by several countries, including the United States, the United Kingdom, Israel, and Japan. It is expected to remain in service for several decades and will likely see continued development and upgrades over its lifespan.