That was the Lone Pine Cannon Shoot, 2008. The bus did have "extra help" blowing up. Chuck, the owner of the property and host of the shoot, pulled the lanyard. It is held Memorial Day and Labor Day on his property in Central Oregon. I'm sure the mess was cleaned up, cause I went Labor Day, 2009, and no mess. Quite a shoot, lots of full sized and half scale cannons, Bowling Ball Mortars, a great time was had by all who attended. BoomLover