The first RoCAF F-16A/B wing, the 455th TFW (comprising the 21st, 22nd, and 23rd TFS), was commissioned on December 18, 2001. They replace the F-5E/F. The second wing, the 401st TFW at Hualien (comprising the 17th , 26th, and 27th TFS), followed on January 15.