The Pentagon has finalized agreements with seven artificial intelligence firms to deploy their technologies within classified military operations, effectively designating the United States armed forces as an AI-first fighting force. The selected partners include OpenAI, Google, Microsoft, Amazon, Nvidia, Elon Musk's xAI, and the startup Reflection. These deals authorize the lawful operational use of proprietary AI systems in secure environments, a strategic move aimed at accelerating the integration of advanced technology into national defense capabilities. Notably absent from this list is Anthropic, the AI developer known for its secure conversational models. Despite previously accessing classified information, the Defense Department has excluded Anthropic following a determination that it poses a supply chain risk. This decision marks a significant shift, as the department had relied on Anthropic's tools for sensitive tasks prior to this announcement. Emil Michael, the Department of Defense's chief technology officer, addressed the exclusion directly in an interview with CNBC. While he maintained that Anthropic remains a security concern regarding supply chains, he acknowledged the potential of the company's new security model, Mythos. Michael described Mythos as a distinct national security moment due to its unique capabilities in identifying and patching cyber vulnerabilities. He emphasized the need to harden defense networks to safely leverage such powerful tools in the future. The current set of agreements builds upon existing arrangements with OpenAI and xAI, which had already secured frameworks for the lawful use of their AI systems by the military. Reports indicate that Google has also reached a similar accord with the Pentagon. Meanwhile, Microsoft and Amazon are not new entrants to this space; they have long-standing, deep relationships with the Defense Department. The contracts with Nvidia and Reflection represent the most recent additions to this expanding ecosystem, broadening the technological base available to the military. According to the Pentagon's announcement, these collaborations are designed to establish a robust, secure foundation for AI deployment across all classified operations. By integrating tools from major technology giants and specialized startups, the military aims to enhance its operational speed, decision-making, and cyber defense posture. The exclusion of Anthropic highlights the rigorous scrutiny applied to foreign and domestic technology vendors in the defense sector, where supply chain integrity is paramount. This series of deals underscores the growing convergence of commercial AI innovation and military strategy. As the Pentagon moves to operationalize these systems, the focus remains on ensuring that the technology serves lawful objectives while maintaining the highest standards of network security. The inclusion of firms like Nvidia and Reflection suggests a willingness to explore diverse technological solutions beyond the traditional big tech players. Ultimately, the move signals a definitive commitment to making artificial intelligence a central pillar of future American military operations, balancing rapid adoption with stringent security protocols.