Japanese Ground Self Defense Force Firepower Demonstration (pic heavy)

Note:  When I was a little guy I remember seeing one of these put on by the 1st Infantry Division.  Lots of boom, fireworks and a James Earl Jones sounding announcer telling us what we were seeing.  Do they still do this in the US military or is it a thing of the past?

The Japanese have to be one of the last forces in the West that use 8in guns.  Pity.  They're slow firing but God do they hit hard!