Speaking for the first time since Alexis opened fire on colleagues at the Washington naval base, his mother released an emotional apology to the families of her son's victims. "I don't know why he did what he did, and I'll never be able to ask him, why. Aaron is now in a place where he can no longer harm to anyone, and for that I am glad," Cathleen Alexis said, her voice cracking in a brief audio statement. "To the families of the victims, I am so, so very sorry that this has happened. My heart is broken."