Traditional defense contractors are pouring money into startups at a pace never seen before, according to a Financial Times report citing data from Dealroom.

Defense giants such as Lockheed Martin have participated in a record $4.1 billion worth of venture capital rounds so far this year, the Financial Times reported. That figure covers rounds the established contractors took part in, not necessarily what they invested on their own.

The driver, according to the FT, is the way drones and autonomous systems are transforming warfare. Cheap, software-driven, rapidly iterated hardware has changed what modern militaries buy and how fast they expect it to arrive — a rhythm that sits awkwardly with the decade-long procurement cycles the big primes were built around.

So the incumbents are adapting by borrowing the venture playbook. As the Financial Times put it, traditional defense companies are starting to act more like venture investors: taking stakes in young companies rather than trying to build every capability in-house.

That shift is notable because defense has historically been one of the most closed industries in the economy, dominated by a handful of contractors with deep government relationships and enormous in-house engineering organizations. Writing checks into startups is an implicit admission that the innovation is happening somewhere else, and that buying a seat at the table beats trying to catch up alone.

The source material does not break down which specific startups received the money, how the $4.1 billion compares with prior years in dollar terms, or how much of it came from any single contractor.

Why it matters: when the companies that build fighter jets start behaving like Silicon Valley investors, it signals that the future of military power is being decided in startup offices as much as in traditional defense plants — with real consequences for who profits from, and who controls, autonomous weapons.