Crews prepare an F-16 assigned to the 416th Flight Test Squadron for a bomb drop test sortie at Edwards Air Force Base, California, Feb. 26. The successful drop test was in support of the Korea F-16 Update Program. The ROKAF currently operates 133 KF-16C/D Block 50/52 fighter aircraft, all of which will undergo extensive modernization and upgrades as part of the comprehensive improvement program. Lockheed Martin was awarded a $1.2 billion contract to retrofit the 133 KF-16s and upgrade them to the advanced F-16V configuration, which is the latest technologically and most advanced version of the fourth generation fighter jet. (Air Force photo by Ethan Wagner)