You can add Microsoft to the growing list of companies whose staff are objecting to the use of their technology for some military purposes. A group of Microsoft workers has published an open letter to CEO Satya Nadella and legal chief Brad Smith asking them to end a $479 million HoloLens contract with the US Army. They contnded that Microsoft is effectively developing weapons by helping the Army create a platform that helps its soldiers train and fight using augmented reality. It not only helps kill people, but turns war "into a simulated'video game'" that disconnects infantry from the "grim stakes" of combat, the workers argued. They also asserted that Microsoft's ethics review process was "opaque" to employees and not strong enough to discourage weapon-related work.