Lockheed Martin was awarded a $1.2 billion contract to upgrade 134 F-16 aircraft for the Republic of Korea Air Force (ROKAF). Among the enhancements are an Active Electronically Scanned Array (AESA) radar, a modern commercial off-the-shelf (COTS)-based avionics subsystem, a large-format, high-resolution center pedestal display and a high-volume and high-speed data bus.