The McDonnell Douglas F-15E Strike Eagle is a modernized variant of the F-15 Eagle. It was optimized as an attack aircraft for the US Air Force with a stronger airframe than earlier versions. It has longer range, more powerful radar, and a second seat for the operator of the strike aircraft equipment. Foreign operators are Israel, Saudi Arabia, Singapore, and South Korea.
Republic of Korea Air Force - 58 F-15Ks in service in January 2014.[4] It ordered a combined 61 F-15K "Slam Eagle" fighters including one lost in an accident.[5]