Boston Marathon Heartbreak Horoscope

I've cast a horoscope chart for the moment of the first explosion at the Boston Marathon. Boston was my home for six years and on "Marathon Monday" we went place to place by car, cheering the runners at selected points along the 26-mile route (a favorite, near our apartment, was "Heartbreak Hill"). The April 15 bombing at the finish line stunned everyone and gave me, the former Bostonian, the nerve to study the astrology of the event and speculate about the why and who.