Tuesday, July 28, 2026
Antares $470M reactors ⚛️, Sphinx $287M satcom 🛰️, L3Harris PAC-3 win 🚀
Antares raises $470M Series C to field military microreactors
2 min readLA-based nuclear startup Antares raised a $470M Series C — $370M equity, $100M debt — led by Caffeinated Capital, with Paradigm, Point72 Ventures, and Shine Capital joining. Antares' Mark-0 reactor hit criticality at Idaho National Lab in June — the first privately developed non-light-water reactor to reach it in the US in four decades. The capital funds a 2028 push to put reactors on military bases, tying advanced nuclear to Golden Dome and installation resilience.
Array Labs raises $21M led by Mitsubishi Electric for space radar
2 min readSpace-based radar startup Array Labs raised a $21M strategic round anchored by Japan's Mitsubishi Electric, six months after its $20M Series A in January. The YC-born company builds suitcase-sized radar satellites that fly in clusters to produce near-real-time 3D maps, with eight-figure contracts already spanning the Space Force, Navy, and DARPA. Array is now pushing into airborne moving-target indication for Golden Dome, and the Mitsubishi tie-up extends its radar play into the Indo-Pacific.
Sphinx Defense wins $287M Space Force deal for strategic satcom software
2 min readThe Space Force awarded Sphinx Defense a $287M Other Transaction agreement, through the Space Enterprise Consortium, to build the mission-planning software for the Evolved Strategic Satellite Communications program. ESS, with satellites built by Boeing, will replace the aging AEHF system and underpin nuclear command, control, and communications. An emerging software firm winning the nuclear-C3 planning layer via OTA shows how far commercial-style procurement now reaches into the most sensitive missions.
L3Harris signs seven-year framework to expand PAC-3 and THAAD propulsion
2 min readL3Harris signed a seven-year framework with the Department of War and Lockheed Martin to nearly triple PAC-3 MSE propulsion output and quadruple THAAD motor production. The company is investing billions to build roughly 60 facilities and add nearly one million square feet across Arkansas, Alabama, and Virginia. Interceptor demand keeps outrunning supply, and locking in solid-rocket-motor capacity is now the binding constraint on air-and-missile-defense throughput.
Army picks GM Defense, Ford, and BC Customs for ISV-Heavy prototypes
2 min readThe Army selected GM Defense, Ford, and BC Customs to each build prototypes of the Infantry Squad Vehicle-Heavy, ordering nine vehicles across the three vendors. ISV-Heavy expands the light, air-transportable troop-carrier line toward heavier payloads, with a competitive down-select to follow the prototype phase. Keeping commercial automakers and small integrators in the same competition is the Army's bet on lower cost and faster ground-vehicle iteration.
Navy's GARC drone boat blows a hole in ex-USS Peleliu in sinking exercise
2 min readDuring a Pacific sinking exercise, the Navy used a Global Autonomous Reconnaissance Craft as a kamikaze drone boat, blowing a hole in the decommissioned amphibious ship ex-USS Peleliu. The GARC, a small uncrewed surface vessel already used for experimentation, doubled here as an explosive-laden one-way attack craft. The demo signals the US moving explosive USV tactics — proven in the Black Sea — into Pacific fleet experimentation.
Aerostar high-altitude balloons being turned into drone motherships
2 min readAerostar is adapting its high-altitude balloons to carry and release drones, turning long-endurance stratospheric platforms into airborne motherships. Operating above 60,000 feet for weeks, the balloons could launch small UAS deep over contested areas without risking crewed aircraft. Cheap stratospheric lift paired with attritable drones is an intriguing new layer in the ISR-and-strike stack worth watching.
Industry braces for a defense continuing resolution
2 min readWith FY2027 appropriations stalled, defense firms are preparing for a continuing resolution that would freeze spending at prior-year levels and block new program starts. A CR is especially damaging to new-start programs and emerging vendors, which cannot ramp until fresh line items are enacted. For startups banking on FY2027 dollars, budget gridlock — not competition — is now the biggest near-term revenue risk.