The U.S. and Japan are close to completing an arrangement that would transfer nearly more than 15 square miles of territory back to Okinawa. The tract of land, which U.S. and Japanese troops had used for training, would comprise the largest such transfer since the island reverted to Japanese control in 1972. Training still will continue on the part of Camp Gonsalves’ Jungle Warfare Training Center that would remain under U.S. control as part of the exclusive-use arrangement between the two countries. The transfer became possible because of an agreement by Japan to build additional roads and helipads.