Bishops Gerald Seabrooks, right, and Willie Billips speak to reporters after Cathleen Alexis, mother of Washington Navy Yard gunman Aaron Alexis, made a statement at her home in New York’s Brooklyn borough on Wednesday, Sept. 18, 2013. Cathleen Alexis said that she does not know why her son did what he did and she will never be able to ask him. Aaron Alexis opened fire Monday, killing 12 people, before he was killed in a shootout with police. (AP Photo/Seth Wenig)