Andy Parker’s morning started at 5:30 a.m. Thursday. The hours passed by in a blur of blinding TV lights — ABC, NBC, CNN. In interview after interview, he almost broke down when the reporter asked the inevitable question: Tell us about your daughter. What made Alison so special? But again and again, Parker fought back the tears. "It’s what I’ve got to do," he said. "This is my new mission in life, and I’m doing it for Alison." Alison Parker, a 24-year-old reporter for WDBJ-TV, and Adam Ward, a 27-year-old cameraman, were gunned down early Wednesday morning in an on-air...