South Korea has rolled out the first mass-produced KF-21 Boramae fighter at Korea Aerospace Industries’ Sacheon facility, with President Lee Jae Myung attending the March 25, 2026, ceremony. The Republic of Korea Air Force received its first Block I aircraft in September. The KF-21 was developed with Indonesian backing as a cheaper, less-stealthy alternative to the F-35, which South Korea also operates. Powered by twin General Electric F414 turb…