Video: BOOM! That's what happens when you load 74.4kg of tannerite, the aluminium and ammonium nitrate explosive used in exploding targets, inside a barn you want levelled. Fire at the tannerite with a rifle and take cover -- bye bye, barn.
No, I have no idea why the on-camera guy is wearing a Nixon mask. Probably to avoid being arrested for what I'm assuming are about three dozen laws he's breaking. This isn't some secluded field miles from anywhere; you can hear cars passing by on the road right before the explosion.