The United States Air Force credits the Onizuka Air Force Station (then called Sunnyvale Air Force Station) as being the "birthplace of the CORONA program". In May 1958, the Department of Defense directed the transfer of the WS-117L program to Advanced Research Projects Agency (ARPA). In FY1958, WS-117L was funded by the USAF at a level of US$108.2 million (inflation adjusted US$ billion in ). For DISCOVERER, the Air Force and ARPA spent a combined sum of US$132.3 million in FY1959 (inflation adjusted US$ billion in ) and US$101.2 million in FY1960 (inflation adjusted US$ billion in ). According to John N. McMahon, the total cost of the CORONA program amounted to $US850 million.