in South Korea. 36 of them were to be delivered in kit form and assembled in South Korea, and 12 were to be produced in Fort Worth. In 2000, a further 20 Korean-built F-16s were added. The South Korean Foreign Military Sales program is known as PEACE BRIDGE. In May 2009, the South Korean government announced an upgrade plan for its KF-16C/D fleet's radar and armament, as part of the 2010-2014 arms acquisition and management package being submitted to President Lee Myung-bak for approval. The ROKAF operates about 135 of the “KF-16” fighters, many of which were built in Korea under a $5.5 billion licensing agreement from 1994 to 2004. Key upgrades will include new radars to replace the existing APG-68v5/v7 systems, avionics and computers, and improving cabling and databuses to MIL-STD-1760 so that the aircraft will be able to carry GPS-guided weapons, AIM-9X Sidewinder missiles, and other new equipment. In March 2014, the Republic of Korea Air Force revealed that it was considering leasing F-16s operated by the US Air Force. ROKAF F-4 and F-5 fighters were intended to be replaced through the F-X III competition by 2016 and the KF-X indigenous fighter, but F-X III deliveries were delayed until 2018 and the KF-X won't enter service until 2023. With the aging fighters still needing to be retired, between 20 and 60 American F-16s are being reviewed for leasing to sustain aircraft numbers. South Korea had previously leased US T-38 Talon trainers for over a decade until the completion of the KAI T-50 Golden Eagle, but a country leasing a combat fighter is very rare due to risk of increased costs if they need to be used in a conflict situation. Taiwan Taiwan is a major F-16 customer. In 1992, 150 F-16A/B Block 20s were ordered while at the same time Taiwan ordered 60 Dassault Mirage 2000s and launched its own indigenous fighter program, the AIDC Ching-Kuo. Delivery of all F-16s was completed in 2001. Taiwan's foreign military sales program is known as PEACE FENGHUANG (Peace Phoenix). President Barack Obama agreed to a $5.3 billion deal to upgrade Taiwan's current fleet of F-16A/B Block 20s to a configuration similar to that of the proposed F-16V standard with AESA radars. Taiwanese F-16Vs are being upgraded with the active electronically scanned array AN/APG-83 radar and a helmet-mounted cueing system. In 2019, Taiwan received its first F-16V. Taiwan upgraded 42 F-16A/Bs to