The Korea Aerospace Industries (KAI) KF-21 Boramae (Northern Goshawk) is a multi-role 4.5 generation fighter. The aircraft is powered by two General Electric (GE) F414-400K turbofan engines. The KF-21 will be built in two capability blocks with the first increment storing munitions externally while the second block stores munitions in an internal weapons bay. The aircraft was formerly designated as KF-X until April 2021.