[OpenAI Hardware Chief Resigns Over Collaboration with U.S. Department of Defense] On March 7, 2026, Caitlin Kalinowski, Head of Hardware and Robotics Engineering at OpenAI, resigned due to her inability to accept the potential domestic surveillance and autonomous weapon applications that could arise from OpenAI's contract with the U.S. Department of Defense. Kalinowski joined OpenAI in November 2024 and chose to leave in less than a year and a half. Previously, OpenAI announced an agreement with the U.S. Department of Defense, allowing the use of AI models in classified networks, which sparked public controversy. Although the contract wording was revised, legal experts pointed out that the limitations were of limited effect. The resignation rate within OpenAI's internal ethics team and AI safety team has reached 37%, with many leaving due to their inability to accept the use of AI for military purposes.