- Source: 4th Air Wing (JASDF)
The 4th Air Wing (第4航空団, dai-yon-koukudan) is a wing of the Japan Air Self-Defense Force. It comes under the authority of Air Training Command. It is based at Matsushima Air Field in Iwate Prefecture.
It consists of two squadrons:
21st Fighter Training Squadron (Mitsubishi F-2B)
11th Squadron (Blue Impulse) (Kawasaki T-4)