One of the most recent additions to the Republic of Korea Air Force (ROKAF) is F-15K Slam Eagle an advanced derivative of the F-15E Strike Eagle which fulfilled the requirements of the "F-X" next generation fighter program in 2002. The F-15K was chosen over the Dassault Rafale, the Eurofighter Typhoon, and the Russian Sukhoi Su-35.

December 12, 2010 - Boeing has delivered three F-15K Slam Eagles to the Republic of Korea Air Force (ROKAF) at Daegu Air Base. The company delivered the first three of 21 F-15Ks it is producing under the Next Fighter II contract to the ROKAF in September. The remaining 15 aircraft will be delivered through March 2012.