The Eighth Fleet's Guadalcanal Reinforcement Unit (the Tokyo Express), then commanded by Raizō Tanaka, was tasked by Mikawa with making the first of five scheduled runs to Tassafaronga on Guadalcanal using the drum method on the night of 30 November. Tanaka's unit was centered on eight destroyers, with six destroyers assigned to carry between 200 and 240 drums of supplies apiece. Notified by intelligence sources of the Japanese supply attempt, Halsey ordered the newly formed Task Force 67, comprising four cruisers and four destroyers under the command of U.S. Rear Admiral Carleton H. Wright, to intercept Tanaka's force off Guadalcanal. Two additional destroyers joined Wright's force en route to Guadalcanal from Espiritu Santo during the day of 30 November.