Tech employees in the US have sent an open letter to the Pentagon regarding Anthropic, with some reports indicating they are urging caution or withdrawal from involvement with the company due to supply-chain risk concerns. Meanwhile, other reports suggest that some tech workers, including those at Google, are petitioning their CEOs to refuse classified AI work with the Pentagon. The situation appears to be part of a broader debate over the use of AI in military applications, with some outlets reporting on a potential ban or deal involving Anthropic and the Pentagon.