At a US military base in central California, four-seater all-terrain vehicles roam hillside trails. This is a training exercise, but not for the people in the vehicles: This is an effort to train AI models to enter conflict zones.  The autonomous military ATVs are operated by Scout AI, a startup founded in 2024 by Coby Adcock and Collin Otis, that calls itself a “frontier lab for defense.” The company said on Wednesday that it has raised a $100 million Series A round, led by Align Ventures and Draper Associates, following its $15 million seed round in January 2025. Scout invited...