 The United States then used Kwajalein as a maintenance and supply hub, supplying forward bases with supplies and equipment.After the war, the United States used Kwajalein as a main command center and preparation base for Operation Crossroads and an extensive series of nuclear tests (comprising a total of 67 blasts) at the Marshalls' atolls of Bikini and Enewetak.Later, in the 1950s and 1960s, Bucholz became part of the Atomic Energy Commission Pacific Testing Area.