Space Development Agency (@SemperCitiusSDA) — posts, photos & videos

@SemperCitiusSDA

Here we go again! We are targeting Saturday, Oct. 10 around 12:39 AM PT/3:39 AM ET for @SpaceX's Falcon 9 launch of the SDA fourth Tranche 1 data transport mission to LEO from SLC-4E at VSFB in California.

More info and livestream link here: spacex.com/launches/sda-t…

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Space Development Agency

@SemperCitiusSDA

Oct 7

SDA announced its intention to seek sources that can provide Performance Enhanced Real-time Ground Environment (PEREGRINE) Sentry capabilities. PEREGRINE Sentry will support SDA #RMWT LEO operational mission within #PWSA ground segment. Due Oct. 23, 2026. sam.gov/workspace/cont…

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Space Development Agency

@SemperCitiusSDA

Oct 6

Falcon 9 had an auto abort just prior to T-0 on Monday. Vehicle and payload are in good health, and teams are resetting for a launch attempt no earlier than Thursday, October 8th.

For updated launch information, view SDA's launch mission page here: spacex.com/launches/sda-t…

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@SemperCitiusSDA reposted

SpaceX

@SpaceX

Oct 5

Falcon 9 had an auto abort just prior to T-0. Vehicle and payload are in good health, and teams are resetting for a launch attempt no earlier than tomorrow, October 6

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Space Development Agency

@SemperCitiusSDA

Oct 5

Live stream from SDA’s fourth Tranche 1 launch starts around 1 AM PT/4 AM ET. You can watch the video back later, too!

@SpaceX live link here: spacex.com/launches/sda-t…

#SemperCitius #PWSA #pLEO #Industry #Space #USSF #Satellites

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Space Development Agency

@SemperCitiusSDA

Oct 4

Calling all night owls! Watch the fourth launch of SDA’s Tranche 1 satellites tomorrow at 1:17 a.m. PT/4:17 a.m. ET.

@SpaceX live link here: spacex.com/launches/sda-t…

#SemperCitius #PWSA #pLEO #Industry #Space #USSF #Satellites

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Space Development Agency

@SemperCitiusSDA

Oct 2

Here we go! Tranche 1 is ready for its next launch! The 4th Tranche 1 launch is planned on/or about Oct. 5, 2026, from VSFB, CA. Launch 4 will deploy 21 @northropgrumman Transport Layer SVs from a @SpaceX Falcon 9. Livestream available on SpaceX’s website: spacex.com/launches/sda-t…

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Space Development Agency

@SemperCitiusSDA

Sep 24

SDA is seeking sources to provide Performance Enhanced Real-time Ground Environment (PEREGRINE) Sentry capabilities to support the SDA #RMWT LEO operational mission within the #PWSA ground segment. Responses due by October 23, 2026. Link here:
sam.gov/workspace/cont…

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Space Development Agency

@SemperCitiusSDA

Sep 21

SDA is seeking #industry proposals for the resilient missile warning and tracking LEO GEPs effort to support #PWSA Tranche 3. Submit proposals by Nov. 2. T3 GEPs scale our ground network to support the Tracking Layer and rapid delivery of mission data. sam.gov/workspace/cont…

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Space Development Agency

@SemperCitiusSDA

Aug 13

SDA & @DIU_x have made awards for our Deorbit-as-a-Service (DaaS) project. We selected @D_Orbit, Katalyst & @fireflyspace for design & risk reduction of in-space transportation & logistics capabilities on a managed-service basis. #SemperCitius #collab #industry

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Space Development Agency

@SemperCitiusSDA

Jul 22

SDA recently announced the successful launch of the third set of #PWSA T1 Transport Layer SVs from VSFB, CA. Check out our On Orbit page to read more about the full T1 constellation and Initial Warfighting Capability tranche: sda.mil/on-orbit/

#SemperCitius #PWSA #USSF

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Space Development Agency

@SemperCitiusSDA

Jul 20

Look at that rocket go! On July 16, SDA launched 42 @YorkSpaceSystem built SVs in LEO at 1:32 p.m. PT from VSFB, CA, using @SLDelta30 SLC 4 East.

For more info: sda.mil/home/news/news…

📸 credit: @SpaceX

#SemperCitius #PWSA #pLEO #Industry #Space #USSF #Satellites

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Space Development Agency

@SemperCitiusSDA

Jul 18

Yesterday, SDA announced the third successful launch of T1 SVs built by @YorkSpaceSystem for the #PWSA from @SLDDelta30’s SLC East at VSFB, CA, which brings the total number of on-orbit T1 SVs to 63. More info here: sda.mil/home/news/news…
📸 credit: @SpaceX
#SemperCitius #USSF

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Space Development Agency

@SemperCitiusSDA

Jul 16

Livestream from SDA’s third Tranche 1 launch is starting NOW!

@SpaceX live link here: spacex.com/launches/sda-t…

#SemperCitius #PWSA #pLEO #Industry #Space #USSF #Satellites

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Space Development Agency

@SemperCitiusSDA

Jul 16

Let’s go! Watch the third launch of SDA’s T1 SVs today at approx. 1:30 p.m. PT/4:30 p.m. ET. The livestream will begin about 10 minutes before liftoff. Watch here: spacex.com/launches/sda-t…
📸: SpaceX Falcon 9R on launch pad at VSFB, CA, using SLC 4 East, T1 SVs. Credit: @SpaceX

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Space Development Agency

@SemperCitiusSDA

Jul 15

Tranche 1 is ready for launch! The third T1 launch is planned for July 16, 2026, from VSFB, CA. Anticipated around 1:30 p.m. PT/4:30 p.m. ET. Livestream available on @SpaceX's website: spacex.com/launches/sda-t…

Photo: SDA T1 faring encapsulating @YorkSpaceSystem SVs. 📸: SpaceX

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Space Development Agency

@SemperCitiusSDA

Jul 14

SDA announced the award of two agreements to @L3HarrisTech and @SierraSpaceCo to build 36 Accelerated Missile Defense Tranche 3 (AMDT3) satellites with missile defense sensing in support of #GoldenDome for America.

Full release here: sda.mil/space-developm…

#sempercitius

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Space Development Agency

@SemperCitiusSDA

May 19

Exciting news at SDA! Today we announced Dr. GP Sandhoo selected as director of SDA and Space Force Portfolio Acquisition Executive (PAE) for Missile Warning & Tracking. Mike Eppolito is SDA Dep Dir and Chief Program Officer.
#SemperCitius #GoodNews #USSF
sda.mil/space-developm…

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Space Development Agency

@SemperCitiusSDA

May 15

SDA Acting Director, Dr. GP Sandhoo, was interviewed about defense, speed, and allied cooperation at this year's 4S Symposium.

Watch the full interview here: youtube.com/watch?v=xOkzVJ…

#SemperCitius #PWSA #USSF #Academia #Industry #Satellites

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Space Development Agency

@SemperCitiusSDA

Apr 28

We were so proud to host @USSpaceForce Vice Chief of Space Operations Gen. Bratton and @SenKevinCramer at our ops center recently. Grateful for their interest and support.
x.com/SenKevinCramer…
#SemperCitius #PWSA #USSF #Satellites

Senator Kevin Cramer@SenKevinCramer · Apr 28

I never tire of bringing space leaders here. After bringing Vice Chief of Space Operations Gen. Bratton to @319thRW, we received a briefing on the floor of @SemperCitiusSDA which reinforced what I’ve long said: Grand Forks is a powerhouse for America’s space mission.

It was valuable for Gen. Bratton to see the capabilities at GFAFB, especially as @POTUS plans major investments in the @USSpaceForce. What’s being built here is unmatched, and I was honored to join Gen. Bratton in highlighting the expertise and innovation coming out of Grand Forks.

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