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What happens when artificial intelligence doesn’t just change work but eliminates it? Not someday. Now.

Nicolas Chaillan served as the first Chief Software Officer of the U.S. Air Force and Space Force. He watched the shift happen inside the Pentagon—then built it himself, running thirteen AI agents for roughly $200 a day to replace work that once required a full team.

Replacement is a firsthand account from someone who built the systems, saw the disruption coming, and is now sounding the alarm. This is not a warning about the future. It’s a dispatch from the present. And a survival plan for your family.

Nicolas M. Chaillan is a serial entrepreneur, cybersecurity expert, and former Chief Software Officer of the US Air Force and Space Force. He led the modernization of software practices across the Department of Defense.In 2022, he founded Ask Sage, one of the first generative AI platforms to achieve the highest security authorization level in the Department of Defense. The company was acquired in 2025 for $250 million. Chaillan has founded thirteen companies since age fifteen-starting his first in France-built and sold over 180 software products, and brings more than twenty-five years of experience in cybersecurity, software development, and government modernization. Today he manages his portfolio, raises his three daughters, and hosts his show, In the Nic of Time, on LinkedIn and YouTube.