Before the storm, said Louisiana resident James Madison, he had Mormons knock on his door just like everybody else and the object was to try to get rid of them as fast as possible; go away, not interested, don’t want to hear what you have to say. After the storm, “ . . . a little bit different now. They’re part of my family now. Always will be. They got into my heart. They’ll never stand on my doorstep again without being invited into my house.” They were hearing stories of troops coming in and heard helicopters were flying over,...