This is a public event held at the Japan Ground Self-Defense Force's Kasuminome Airfield in Sendai City, Miyagi Prefecture.
The mountain visible in the distance is Mount Zao.
Nine helicopters are performing a formation flight.
Many Japanese people may not be aware of this, but the helicopters that carried out firefighting operations at the site of the Fukushima Daiichi Nuclear Power Plant accident deployed from this base.