Senator CASH (Western Australia) (14:53): Mr President, I ask a supplementary question. Given that the Yongah Hill detention centre at Northam will house 600 single adult male detainees, what security measures have been put in place to ensure we do not see riots like those that occurred at other detention centres around Australia, including Christmas Island, Villawood, Sherger, Curtin and Northern detention centres to name but a few?