In prehospital medicine, there’s no such thing as a “do-over.” You either have the blood when it’s needed, or you don’t. And if you don’t, you already know the ending. Delta Development Team isn’t here to make that ending acceptable. On August 4, 2025, the Tucson-based company locked in a $5 million Series A3 round, blending strategic capital with non-dilutive fuel from the U.S. Air Force TACFI program. That’s not just money, it’s a vote of confidence from some of the sharpest investors in the game, including Central Texas Angel Network, Arizona Tech Investors, Desert Angels, Baylor Angel Network, and Pasadena Angels.
Founded in 2018 by Montgomery “Monti” Leija, Robert Futch, and William “Bill” Barg, Delta isn’t just building portable coolers. They’ve built the Autonomous Portable Refrigeration Unit (APRU), a battery-powered, military-grade refrigeration system that keeps blood at a stable 1°C to 6°C for up to 95 hours. It’s FDA listed, AABB certified, helicopter air ambulance qualified, waterproof, dustproof, and even military battery compatible. This is not some weekend camping cooler. This is life support in a box.
Montgomery Leija knows the stakes. Former U.S. Army Special Forces Medical Sergeant, he’s treated casualties in places where resupply wasn’t coming and seconds outnumbered supplies. Robert Futch, a mechanical and systems engineer, understands how to make tech work in environments that destroy tech. Bill Barg brings the kind of engineering discipline that treats “failure” as just a temporary state before redesign. Together, they’ve pushed Delta into a market position where more than 70% of the EMS agencies running prehospital blood programs are using Delta’s systems. That’s not luck. That’s dominance.
Delta isn’t only on the trucks of LA County Fire, Austin Travis EMS, and Fort Worth Fire. They’re in the field with the Canadian Armed Forces, the Israeli Defense Force, and even supporting Ukrainian military operations. The company has moved nearly $5 million in revenue in 2024 alone, proving this isn’t an R&D science project, it’s a growth story.
The Series A3 capital will accelerate production, push their new Total Blood System into reality, and scale their manufacturing partnerships with Xometry. That TBS unit will carry 40 to 50 bags of blood for long-haul military and civilian missions. When it hits the market, you won’t just see Delta on the frontlines. You’ll see them owning them.
The takeaway? When you own the cold chain, you own the moment it matters most. And Delta Development Team just iced the competition.
