A group of approximately 50 Microsoft employees released a public letter addressed to company leadership denouncing the awarding of a U.S. military contract to Microsoft to adapt its HoloLens augmented reality technology for use in combat scenarios.

“While [Microsoft] has previously licensed tech to the U.S. Military, it has never crossed the line into weapons development. With this contract, it does,” the letter read. “The application of HoloLens within the IVAS [integrated visual augmentation] system is designed to help people kill.”