During the 2011 Consumer Electronics Show, it was announced that the United States government had expressed interest in purchasing HAL suits. In March 2011, Cyberdyne presented a legs-only HAL version for the disabled, health care professionals and factory workers. In November 2011, HAL was selected to be used for cleanup work at the site of the Fukushima nuclear accident. During the Japan Robot Week exhibition in Tokyo in October 2012, a redesigned version of HAL was presented, designed specifically for the Fukushima cleanup. In March 2013, ten Japanese hospitals conducted clinical tests of the newer legs-only HAL system. In late 2014, HAL exoskeletons modified for construction use entered service with the Japanese construction contractor Obayashi Corporation.