air-defense
(2)
Surtr Defense Systems
Surtr Defense Systems builds ParallaxOS, a hardware-agnostic operating system for drone defense. It ingests data from any radar, RF detector, camera, or acoustic array, fuses it into a single common operating picture, applies AI threat classification, and passes human-authorized engagement recommendations to any effector. Founded in 2026 by two former Shield AI and Anduril autonomy engineers, the company is a Y Combinator Spring 2026 (P26) startup that raised roughly $4.8M in seed funding and field-tested its system with Ukraine's Brave1 defense cluster.
CHAOS Industries
CHAOS Industries is a Los Angeles defense technology company building Coherent Distributed Networks (CDN), software-defined sensing systems that detect aerial and missile threats faster and cheaper than traditional radar. Founded in 2022, it makes distributed radar products like Vanquish and Astria for counter-drone, border, and homeland defense. By late 2025 the company had raised over $1 billion and reached a roughly $4.5 billion valuation.