"I want to leave a safe world for my kids. This is what I got." Bryon Hargis (@hargsb) is the founder and CEO of @Castelion, a defense startup building hypersonic missiles the way SpaceX builds rockets: fast, iteratively, and cheap enough to produce in quantity.  His conviction is that America does not have a weapons problem. It has a manufacturing and learning rate problem. And that gap is more dangerous than any single technology demonstration. Timestamps (0:00) Intro (4:01) Why America needs hypersonic missiles (12:05) The missing middle ground in deterrence (19:40) How hypersonics differ from ballistic missiles (25:05) The economics of defensive vs. offensive systems (28:21) How SpaceX differs from traditional aerospace (37:40) Why Bryon chose to build in defense over space (42:42) Key factors that drove Castelion’s success (1:01:06) The importance of lower costs and quicker manufacturing (1:10:04) Book recommendations Thank you to the partners who make this possible @dottechdomains: An identity for builders at their core: @ahrefs Brand Radar: Find your brand in AI results: @withpersona: Trusted identity verification for any use case: