On Dec. 7, the nation observed National Pearl Harbor Remembrance Day. It was 81 years ago that a surprise aerial attack by Japan pushed the U.S. into World War II. Union-Tribune feature writer John Wilkens, enterprise editor Kristina Davis, managing editor Lora Cicalo; and publisher and editor Jeff Light discuss how San Diego has embraced the memory and meaning of Pearl Harbor, and how our newsroom covers that day.