Bryon Hargis

I'm grateful to the @DeptofWar, @DoWCTO, and @USDASDuffey for the trust they have placed in @Castelion. We are working with maximum urgency to deliver capability our Armed Forces can leverage to keep America safe.

Please do not be fooled by foreign intel agents who are "recruiting" on behalf of Castelion from non-Castelion email addresses. We've had several reports of someone going after senior military and industry officials. While the email domain name matching ours is a start, even that isn't foolproof. If the email appears to come from us you can always view the original message header and look for something similar to "dkim=pass," depending on your mail provider. Our domain signs outgoing mail and I wish email providers made this more apparent similar to the lock icon on a https website. @Castelion

We are honored to deliver this capability for the Navy and the trust you have placed in us. Our success has only been made possible by the incredible partnership with the Warfare Centers, NAVAIR, OPNAV N98 and others, within and outside of the Navy. We wouldn’t be here without you. Thank you!

Interested in scaling hypersonic manufacturing? We have the job for you! careers-page.com/castelion-corp… careers-page.com/castelion-corp…

REINDUSTRIALIZE 3.0 SPEAKER ANNOUNCEMENT Over the coming weeks we'll be announcing our speakers for Reind 3.0. Here's the first crew:

ULA effectively died when they failed to find a buyer willing to invest another $5–10B to keep them competitive. Vulcan is not going to be competitive over the next decade. Tory led them to their demise but didn’t stay to preside over the corpse. ULA was pricing itself as a premium offering even though I believe they have a negative NPV. Aggressive changes in management might be able to turn that around, but if Blue can reliably and repeatedly reach orbit anytime this decade, that will be the end of the road for ULA.

Breaking: The U.S. Space Force has advanced Blue Origin as a finalist to build a major launch site at Vandenberg Space Force Base, expanding competition in heavy-lift space launches.

@unusual_whales Before the pitchforks come out, the timeline for selling private shares isn't comparable to a public company. He would have agreed to the sale and the price long before the close date and the timeline for close was likely dictated by xAI, not him.

BREAKING: Emil Michael, who is the Pentagon’s under secretary for research and engineering under the Trump administration, ,made a profit of up to $24 million selling a private investment he held in Elon Musk’s AI company earlier this year. He oversees negotiations with AI companies and has been pushing the defense department to rapidly increase the widespread use of AI. During the period that Michael owned the xAI stock the Pentagon announced two separate agreements with the firm. On 22 December, the defense department, which now refers to itself as the Department of War, announced a new agreement with xAI. Michael did not ultimately sell his position in xAI until 9 January,

@AJ_Piplica @hermeuscorp @khoslaventures Congratulations @hermeuscorp

Today @hermeuscorp is announcing a $350M Series C financing led by @khoslaventures, bringing our valuation to $1B. Everything we do is with one goal in mind: build the fastest unmanned aircraft in the world for the American warfighter. To our investors, thank you for your faith and trust in us. To our team, you continue to amaze me with your ingenuity, commitment, and fire for tackling some of the hardest and most meaningful problems in aerospace. To those who want to build the fastest aircraft in the world - we’re hiring. This is a return to the roots of American innovation. More from me here: hermeus.com/newsroom-conte…

@scott_sanderssb @MollySOShea @fubini @ssankar @anduriltech @hermeuscorp @Zsshore @EnchiladasSurf Either there are crystals located at that lat/long, or I was too aggressive in deleting all the BS Google tracking links. Either way you win?

@hargsb @MollySOShea @fubini @ssankar @anduriltech @hermeuscorp @Zsshore @EnchiladasSurf did you send me a lat long for a movie reference....

Ross @fubini says “There are only ~40 people in the entire US that are able to sell products to the government, period.” "The most rarefied skill is the ability to do that effectively.. you're: - @ssankar, Palantir - Matt Steckman, @anduriltech - Zach Shore, @hermeuscorp - Scott Sanders, @ForterraDrive You very quickly get to the end of the list."

@scott_sanderssb @MollySOShea @fubini @ssankar @anduriltech @hermeuscorp @Zsshore @Zsshore asked me and @EnchiladasSurf to meet him here for metaphysical brunch, you should think about going if you don't want to be off the podium forever. google.com/maps/place/Cry…

@MollySOShea @fubini @ssankar @anduriltech @hermeuscorp Excited to have been drafted in 4th here…. It’s because @Zsshore has magic crystals. Isn’t it.

@neelkunjur Congrats @K2SpaceCo!

I'm excited to announce we have achieved our Tier 1 mission success criteria and have begun gathering a tremendous amount of data on how this brand new spacecraft performs. On March 30th, 13:17:08Z, the Gravitas spacecraft separated from the SpaceX Transporter-16 stack to begin its mission as one of the highest power free-flying satellites ever launched. Immediately after separation, the spacecraft autonomously: - Executed detumbling maneuvers - Established two-way communications with the ground (on our very first ground station pass) - Deployed its 20kW solar arrays - Slewed to a safe and stable attitude to await further ground commands These actions alone are a testament to the incredible work of our in-house engineering, software, and GNC teams to build a robust spacecraft. Since then, our operations team completed all initial system activations and checkouts, confirming the vehicle is in a power positive and thermally stable state with no major anomalies observed at this time. We completed this phase of the mission ahead of schedule. Next up we will be powering up and downlinking data for all payloads aboard the Gravitas spacecraft in support of our customers and partners while continuing to put the spacecraft through its paces. As we noted ahead of launch: The goal of this mission is to experiment and push our systems to the limit to inform future missions. I look forward to sharing more on our successes and challenges as the mission proceeds. Video of our satellite below; link to full T-16 webcast: x.com/SpaceX/status/…

@MavrookasD @Saronic @kleinerperkins Congratulations Dino!

Today we’re sharing some big news. @Saronic closed a $1.75B Series D fundraise at a $9.25B valuation, led by @kleinerperkins. Honestly, it’s a bit surreal to look back at how much has happened in such a short time. We started with a simple belief: the maritime world was being overlooked, and autonomy could change that in a big way. Since then, it’s been a lot of time on the water, building, testing, breaking things, fixing them, and doing it all over again — just trying to move fast and get better every step of the way. What makes me most proud though isn’t the milestone, it’s the team behind it. Saronic is what it is because of people who genuinely care about what we’re building and who push hard every day to do it right. That’s the part that really matters. This next chapter is about scaling up — faster builds, bigger footprints, and continuing to invest in American shipbuilding in a real way. We’ve got a lot of work ahead, and that’s the exciting part. Grateful to everyone who’s been part of this, from our team, to our investors and partners, and to our customers. Let's go!

@KaranKunjur @K2SpaceCo @SES_Satellites Great choice by SES here! Congrats to the @K2SpaceCo team.

I’m excited to share that @K2SpaceCo is on contract to deliver 28 satellites to @SES_Satellites for meoSphere, SES’s next-generation MEO network. This program reflects a shift we’ve believed in from the beginning: that satellite networks of the future will require significantly more power, flexibility, and scalability than legacy architectures were designed to support. The initial batch of 28 K2 high-power satellites will effectively double SES’s networks capacity. Over time, we will continue to build on this foundation together, to deliver new levels of performance to MEO and support the growing demands for sovereign, secure, and high-throughput connectivity. We’re proud to support SES as they push forward a truly multi-orbit, multi-mission network. Thanks to @adel_al_saleh for helping to share the news!

Congratulations Michelle!

@cwamidon We talking a neighborhood 7-Eleven or a Buc-ee’s? Asking for a friend.

Remember that there are multiple defense startups valued at billions of dollars with less revenue than a gas station.

@Saronic @castelion Thank you!

Proud to have supported @castelion during their most important test flight of 2025. Together, we demonstrated how our Autonomous Surface Vessels can play a critical role in accelerating and enabling operations in complex, multi-domain environments.

From initial concept to successful test in less than a week with telemetry captured all the way to impact, thanks @Saronic!

@jimbelosic We paid the fee to reserve a spot and speak with Tesla about doing exact same thing and they told us this wasn't supported despite the public datasheet making it seem like it should be obviously supported. Waste of 1 or 2k, call anyone else in my opinion.

Can anyone buy a Tesla mega pack or do you have some sort of special permits or something? I need another 1000 amps of 480v during peak, but we could charge off peak

@bridgitmendler @WashingHarbour @a16z Congratulations @NorthwoodSpace

Today Northwood has raised $100M in Series B funding led by @WashingHarbour and co-led by @a16z to support a simple objective – take space missions further faster. This financing follows millions in signed contracts including a $49.8 million contract with the Space Force to support the Satellite Control Network – critical infrastructure used for launches and early satellite operations, to track and control satellites, and to provide emergency support to tumbling and lost satellites.