SDA’s Tranche 0 continued to show success in 2025 with the demonstration of optical space-to-ground (S2G) communications using @YorkSpaceSystem and @SpaceX satellite vehicles, and SDA prototype optical ground terminals. #SemperCitius #SDADelivers2025 #PWSA

SDA successfully demonstrated S2A optical comms capability in Aug. 2025. With #industry partners @GeneralAtomics and @KeplerComms, SDA successfully demoed bi-directional S2A optical comms between a GA-EMS OCT mounted on an aircraft and an SDA #PWSA-compatible Kepler SV in LEO.

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#HappyBirthday, @USSpaceForce. We are proud to be part of the Space Force team delivering the #PWSA as part of the #USSF holistic hybrid space architecture to support joint force operations and ensure warfighting success across all domains. #SemperSupra #SemperCitius

SDA has awarded 4 prototype agreements to @LockheedMartin, @northropgrumman, @RocketLab & @L3HarrisTech for Tracking Layer Tranche 3 (TRKT3) of the #PWSA. TRKT3 expands upon MW/MT and missile defense satellites deployed in T1 & 2. Full news release here: https://t.co/1pAGem5X5J

This year, SDA achieved its first multi-vendor, multi-plane collection with the @SpaceX, @leidos and @L3HarrisTech Tracking Tranche 0 demo satellites during a Multi-service Advanced Capability Hypersonic Test Bed (MACH-TB) live fire test. #SemperCitius #SDADelivers2025 #PWSA

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As this year draws to a close, SDA would like to share 6 or 7 accomplishments we think are worth talking about. Stay tuned as we highlight these milestones over the next couple of weeks. #SemperCitius #SDADelivers2025 #PWSA

#SmallBusinessSaturday is tomorrow! Did you know SDA has 87 active Phase 1 and 2 SBIR/STTR contracts, valued at more than $195M? SDA made 35 awards to small businesses this year, valued at more than $47M, and expects to release 4 more topics in FY2026. https://t.co/ovWuSf4cgc

November includes #SmallBusinessSaturday & SDA takes every opportunity to embrace the important role small businesses play in the delivery of critical technologies. SDA can’t deliver without the participation of innovative small businesses in the defense & space industrial bases.

We haven't posted in a while & we've missed you! Catch up with SDA's recently updated On Orbit page to read about last month's successful Tranche 1 launch and our 21 Transport satellites now on orbit. Link here: https://t.co/CJpRqYi6oB #SemperCitius #PWSA #Satellites #T1TL

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https://t.co/mAJsRJac7b

This summer USINDOPACOM, SDA, and AUS achieved a milestone in military space comms during Talisman Sabre 25 (#TS25) exercise: first-time Link 16 relay from Tranche 0 SVs on orbit to stationary operational aircraft on a tarmac. #SemperCitius #PWSA #Space #TACSATCOM

Thanks, @SpaceForceDoD! SDA is happy to be part of the team, launching satellites 🛰️ and delivering capabilities to the #warfighter! 🪖⚓️✈️ #sempercitius

Thank you @SecAFOfficial for your support, your recent visit, and your congrats on the first Tranche 1 launch! Plenty more launches where this one came from. We'll keep going until all the T1 capabilities are delivered...and then it's on to Tranche 2! #sempercitius

On Wed, SDA confirmed successful launch of #PWSA Tranche 1 sats into LEO from VSFB, CA, SLC 4E. Tranche 1’s first launch deployed 21 Transport Layer SVs provided by @YorkSpaceSystem, as part of SDA’s Initial Warfighting Capability. 📸 credit: @SpaceX https://t.co/XYJwl0iwqL

Thank you @SecAFOfficial, Dr. Troy Meink, & @SenKevinCramer for support leading up to SDA’s first launch of Tranche 1 SVs, part of #PWSA Initial Warfighting Capability. SDA launched the first 21 PWSA T1 Transport Layer SVs from VSFB, CA. 📸: Sr. Airman Daekwon Stith, @SLDelta30

SDA successfully launched 21 Tranche 1 satellites into low-Earth orbit at 7:12 a.m. PT today from Vandenberg Space Force Base, CA, using SLC 4E. https://t.co/XYJwl0iwqL 📷: @SpaceX Falcon 9R with encapsulated Tranche 1SVs on the launch pad at VSFB, CA. #SemperCitius #PWSA #space

Livestream from SDA’s first Tranche 1 launch is starting ANY MINUTE. Tune in now to see this momentous launch LIVE! @SpaceX livestream link here: https://t.co/IUre1vNmQw #SemperCitius #PWSA #pLEO #Defense #Industry #Space #USSF #Satellites

Less than one hour until Falcon 9’s launch of the @SpaceForceDoD and @SemperCitiusSDA’s first Tranche 1 mission from California. Weather is looking good for liftoff and propellant load will begin shortly → https://t.co/4wuDFOp8CI

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Are you ready? We are! Watch the first launch of SDA’s Tranche 1 satellites tomorrow at 7:00 a.m. PT/10:00 a.m. ET. @SpaceX live link here: https://t.co/IUre1vNmQw #SemperCitius #PWSA #pLEO #Defense #Industry #Space #USSF #Satellites

Here we go! First T1 launch planned on/or about Sept. 10, 2025, targeting 7:12 AM PT, from CA. Launch 1 will deploy 21 Transport Layer SVs provided by @YorkSpaceSystem on a @SpaceX Falcon 9 reusable rocket. Livestream here: https://t.co/IUre1vNmQw #sempercitius #goforT1launch