Iruma Air Base opens its gates to the public. What happens? The Japan Air Self-Defense Force will showcase some of its finest aircraft, including the F-15. The Ground Self-Defense Force will stage a parachute drop, and then the Blue Impulse JASDF aerobatic demonstration team will provide the highlight of the show. How to get there Get off at Inariyama Koen Station on the Seibu Ikebukuro Line (take the Express from Ikebukuro) or Sayama Station on the Seibu Shinjuku line, then take a special free bus to the base.