A Carson City man charged with involuntary manslaughter changed his plea to guilty Tuesday morning in district court.Kennith James Johnson, 47, abandoned his two friends, whom he had been shooting and drinking in Brunswick Canyon, after one had been accidentally shot in the jaw.Anthony Kelich, who was handling the rifle when it went off, pleaded guilty in November 2011 to charges of involuntary manslaughter and illegal handling of a firearm. After Kelich shot Mike Scott in the face, Johnson jumped into the truck he had driven to Brunswick Canyon in and fled the scene, according to court documents.Johnson told the …