Both Captain Van Valkenburgh and the embarked division commander, Rear Admiral Isaac C. Kidd, spent the next Saturday evening, December 6, on board. Suddenly, shortly before 08:00 on December 7, Japanese planes initiated their attack on Pearl Harbor. Captain Van Valkenburgh ran from his cabin and arrived on the navigation bridge, where he immediately began to direct his ship's defense. A quartermaster in the pilot house asked if the captain wanted to go to the conning tower—a less-exposed position in view of the Japanese strafing—but Captain Van Valkenburgh adamantly refused and continued to man a telephone.