Eagle" which is used as a trainer for jet pilots, now being exported to Indonesia. A multirole all-weather version of the T-50 is the modified FA-50, which can be externally fitted with Rafael's Sky Shield or LIG Nex1's ALQ-200K ECM pods, Sniper or LITENING targeting pods, and Condor 2 reconnaissance pods to further improve the fighter's electronic warfare, reconnaissance, and targeting capabilities. Other improved weapon systems over FA-50 include SPICE multifunctional guidance kits, Textron CBU-97/105 Sensor Fuzed Weapon with WCMD tail kits, JDAM, and JDAM-ER for more comprehensive air-to-ground operations, and AIM-120 missiles for BVR air-to-air operations. FA-50 has provisions for, but does not yet integrate, Python and Derby missiles, also produced by Rafael, and other anti-ship missiles, stand-off weapons, and sensors to be domestically developed by Korea. The Republic of Korea Air Force also expressed interests in acquiring the RQ-4 Global Hawk and Joint Direct Attack Munition kits to further improve their intelligence and offensive capabilities. The replacement programs for the F-4D/E and F-5A/B/E/F are the KTX-2 and F-X, respectively. The latter has been fulfilled by the Boeing F-15K. The South Korean government also announced its plan to develop indigenous helicopter manufacturing capacities to replace the aging UH-1 helicopters, many of which had seen service during the Vietnam War. The program originally included plans for the development of both a civilian and a military helicopter. This was later revised and gave priority to the utility helicopter program. Based on the success and experience of the civilian KMH (Korean Multi-purpose Helicopter) the attack helicopter, which would share a common configuration, will be developed. Personnel Conscription in South Korea requires male citizens over between the age of 18 and 28 to perform compulsory military service. Women are not required to perform military service, but they may volunteer as officers, warrant officers, or non-commissioned officers. The length of compulsory military service varies based on service branches: Active duty enlisted personnel serve 18 months in the Army or Marine Corps, 20 months in the Navy, and 21 months in the Air Force (the length of military service will be reduced to 18 – 22 months by 2022.). Commissioned officers, warrant officers, and non-commissioned officers are volunteer-based, and serve longer terms than those of enlisted personnel, or as career. Non-active duty personnel such as social work personnel serve for various lengths. After conscripts finish their military service, they are automatically placed on the reserve