BINGHAMTON, N.Y. – On April 3, families of the 13 victims of the April 3, 2009, mass killing at the American Civic Association gathered at the ACA building in Binghamton, N.Y., at 10:30 a.m., the estimated time of the shooting ten years ago. They came to attend a tribute to those killed by a deranged gunman (who also shot himself) and for a vigil service.