In December 2012, Bigelow began development work on the Bigelow Expandable Activity Module (BEAM) under a US$17.8 million NASA contract. After a number of delays, BEAM was transported to ISS arriving on 10 April 2016, inside the unpressurized cargo trunk of a SpaceX Dragon during the SpaceX CRS-8 cargo mission. The mission tested the BEAM module's structural integrity, leak rate, radiation dosage and temperature changes over a two-year-long mission. At the end of BEAM's mission, the module was planned to be removed from the ISS and burn up during reentry. In October 2017, it was announced that the module would stay attached to the ISS for at least three more years, with options for two further one-year extensions.