By DEEPA BHARATH and LUIS ANDRES HENAO LOS ANGELES (AP) — The Rev. Steven Marsh never thought he would see the day his church in Laguna Woods, California — a town of 16,500 populated largely by retirees — would be spending $20,000 a month for security. Then a gunman opened fire on May 15 during a luncheon at Geneva Presbyterian Church, where Marsh is senior pastor, killing one and injuring five other