Raptor Response Four U.S. Air Force F-22 Raptor fighter aircraft from Kadena Air Base, Japan, fly over Osan Air Base, South Korea, Feb. 17, 2016. The Raptors were joined by four F-15 Slam Eagles and U.S. Air Force F-16 Fighting Falcons in response to recent provocative action by North Korea. Air Force photo by Song Kyong-hwan SHARE: Download: Full Size (0.47 MB) Credit: Song Kyong-hwan VIRIN: 160217-F-TE668-002A.JPG Photo Gallery