(Fayette County, IN)--People across a wide radius Tuesday night reported hearing a boom so loud that it shook walls and windows.  Fayette County officials Wednesday morning indicated that the boom was the result of someone setting off a large amount of tannerite in the Bentonville area.  Tannerite is a brand name for an exploding target used in firearm practice.  Reports of the explosion being heard and felt came from Richmond, Connerville, Milton, Straughn, and other communities.