After looking at the patterns, it strikes me this could be A KID, and that the 13 old might know who was involved or was involved himself and was shot to keep quite......1. the shooter shot adults, (parents)2. always done by the time a kid should be home3. the first rampage seemed to happen while a young person would have been away from home without notice, (in school)4. no action last weekend when they would have been with their folks....