By Arnold M. Knightly, Boulder City Review Talking in a calm voice, off-duty Metropolitan Police Lt. Hans Walters told a Boulder City dispatcher he shot and killed his son Max and wife Kathryn Michelle, killing her “because she’s in such chronic pain from her neck and back,” according to a 911 recording released Monday. http://mm.reviewjournal.com/media/audio/2013/boulder_city_suicide.mp3 [...]