to expand Camp Humphreys to make it the main base for most U.S. troops in South Korea. It concluded when residents of Daechuri and other small villages near Pyeongtaek agreed to a government settlement according to which they would leave their homes in 2006 and allow the base expansion. Compensation for the land averaged 600 million won (about US$600,000) per resident. Under a 2004 land-swap pact, the U.S. promised to gradually return a combined 170 square kilometers of land housing 42 military bases and related facilities to South Korea and move U.S. military forces from garrisons in and north of Seoul to Camp Humphreys. With the creation of the Installation Management Command on 24 October 2006, U.S. Army Support Activity Area III was redesignated as U.S. Army Garrison Humphreys and Area III on 15 March 2007. On 13 November 2007, USFK and South Korean officials conducted a groundbreaking ceremony for the expansion of Camp Humphreys. Under that plan, the 28,500 U.S. troops in South Korea would be consolidated into two regional hubs in Pyeongtaek and Daegu by 2016. 2010s In 2010, the U.S. Army announced that a tour normalization policy would gradually be introduced. Single soldiers would typically serve two-year tours, and troops who brought families would stay for three years. Previously most troops served one-year unaccompanied tours in Korea. Additional infrastructure to accommodate more families would be built. On 2 September 2011, U.S. and South Korean officials participated in a joint groundbreaking ceremony to mark the beginning of construction for an elementary school to accommodate 850 students and a high school to accommodate 950 students on Camp Humphreys. On 26 August 2013, Camp Humphreys opened a new elementary school. The new elementary school will hold kindergarten through fifth-grade classes for a total enrollment capacity of 875 students. As of 2017 the U.S. Army called Humphreys "the largest power projection platform in the Pacific". When the final stage of base expansion is completed about 2020, Humphreys will have tripled in size to nearly 3,500 acres, making it the largest U.S. overseas military base. To accommodate more families, up to twelve 12-story housing towers will be built. The population of Humphreys is expected to exceed 45,000. Up to 93% of the $10.7 billion expansion cost will be paid by South Korea under a 2014 Special Measures Agreement. Garrison units The following are based at Camp Humphreys: United States Forces Korea United