A thermal sight. A rugged computer. A submarine motor. Leonardo DRS has built a business inside the machines that get all the attention.
Its rugged blue-and-white boxes do not transmit. They listen - then turn crowded radio noise into locations, alerts and evidence for militaries, regulators and intelligence teams.
A 58-person shop in upstate New York builds software-defined radar - and just landed on a defense contract worth up to $151 billion.
Greypoint Industries is a Y Combinator S26 defense hardware startup building mass-produced, soldier-deployable autonomous interceptors that shoot down attacking drones for a fraction of the cost of the drones themselves. Founded by four Canadians with roots in the Canadian Infantry and hardware engineering, the company designs and manufactures counter-drone systems for Western and allied forces, aiming to give frontline soldiers an affordable answer to mass drone-swarm attacks.
Ornadyne is a Los Angeles defense-tech startup building autonomous flapping-wing drones - ornithopters - that look, fly, and sound like real birds. Its flagship O1 is a crow-shaped, propeller-free aircraft designed for low-detectability military reconnaissance, offering hour-class flight times and a low acoustic signature so it blends into the visual and acoustic 'noise' that counter-UAS systems already ignore. Founded in 2026 by Geourg Kivijian and Armen Arakelyan and backed by Y Combinator (P26).
Perseus Defense is a YC S25 aerospace and defense startup building low-cost, man-portable guided micro-missiles to shoot down small drones. Its Harpe interceptor targets Group 1 and Group 2 drones at a claimed cost of under $10,000 per shot - roughly a 20x reduction versus existing systems - closing the cost gap where a $500 drone can threaten multi-million-dollar assets. Founded by ex-NASA aerospace engineer Jason Cornelius and ex-Boeing autonomy lead Steve Messinger, the company is building an affordable, mass-producible 'Iron Dome for drones' for U.S. defense and homeland security customers.
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.
Allen Control Systems (ACS) is an Austin-based defense technology company building Bullfrog, an AI-powered autonomous robotic weapon station designed to detect, track and shoot down hostile drones. Founded in 2022 by three engineer-entrepreneurs, ACS uses passive machine vision and custom fire-control software to turn standard machine guns into precision counter-drone turrets, aiming to cut the cost-per-kill of a drone from expensive missiles down to a few dollars of ammunition. The company raised a $200M Series B in 2026 at a $2.2B valuation to scale manufacturing for the U.S. military and allied forces.
ZeroMark is a New York-based defense technology company building an AI targeting layer that turns ordinary infantry weapons into precision counter-drone systems. Its flagship Apex is a rifle-mounted, software-defined fire control system that uses electro-optical cameras, LiDAR and machine-vision ballistics to physically adjust a soldier's aim in real time, letting a dismounted operator hit small, fast-moving drones without specialist training. Founded in 2022 by former U.S. Navy servicemember and ex-MongoDB executive Joel Anderson, ZeroMark has raised roughly $7M in seed funding led by Ground Up Ventures and Andreessen Horowitz, followed by a 2025 strategic round, and has demonstrated its system in a U.S. Marine Corps live-fire exercise.
Aurelius Systems is a San Francisco defense-technology startup building Archimedes, an autonomous, high-powered laser turret that detects, tracks and neutralizes drones in seconds for roughly the cost of electricity. Founded in 2024 by photonics veterans Michael LaFramboise and John Marmaduke, the company fuses commercial off-the-shelf hardware, advanced optics and AI-guided targeting into a compact, low-cost counter-UAS platform aimed at protecting soldiers and critical infrastructure from cheap, swarming aerial threats.
Guardian RF builds low-cost, passive radiofrequency sensors that make low-altitude airspace observable in real time. Founded in 2024 by three Georgetown physics majors, the company deploys palm-sized 'Scout' sensors that detect the control signals drones and their operators emit, triangulating both across a mesh network. Its systems have been battle-tested on the front lines in Ukraine and are now fielded at Vandenberg Space Force Base and across U.S. airports and event venues, turning drone detections into structured, shareable intelligence.
Thor Dynamics is a Palo Alto-based defense-tech startup building Laser Armor, an AI-powered directed-energy system that detects, tracks, and neutralizes hostile drones and drone swarms with a high-energy laser. Founded in 2024 by a team of MIT- and Wharton-trained operators and former U.S. Navy leadership, the company pairs up-to-20-kilowatt laser output with reinforcement-learning targeting and NVIDIA edge compute to deliver affordable, scalable counter-drone defense for critical infrastructure and the military.
CX2 (CX2 Industries) is an El Segundo, California defense-technology startup building AI-enabled hardware and software for the electromagnetic spectrum. Its systems detect, classify, geolocate, and disrupt hostile RF emitters in jammed and GPS-denied environments, aiming to give allied forces an edge in electronic warfare at a fraction of the cost of legacy systems. Founded in 2024 by a team including Nathan Mintz, Porter Smith, Lee Thompson, and Mark Trefgarne, CX2 has raised about $46M, led by a $31M Series A from Point72 Ventures, and launched its Wraith airborne EW platform in December 2025.
Artis, LLC (Advanced Real-Time Information Systems) is a Herndon, Virginia defense and technology developer that builds systems for problems measured in microseconds. Founded in 1999 by Keith Brendley, the company is best known for active protection systems for military vehicles - Iron Curtain and its third-generation successor, Sentinel - that detect and defeat incoming rockets, missiles and drone-borne threats in fractions of a second. Beyond defense, Artis applies its high-speed sensing and parallel-processing work to highway worker safety, 3D imaging and pedestrian monitoring.
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.