U.S. Space Force & Space Development Agency (military space enterprise)

The U.S. Space Force is the military space service of the Department of War; the Space Development Agency (SDA) is its component agency running the Proliferated Warfighter Space Architecture (PWSA), a tranche-by-tranche buildout of hundreds of low-earth-orbit satellites procured through Other Transaction Authority outside the traditional acquisition system; Space Systems Command is the Space Force's procurement arm. This entry zooms into the defense-space customer subset that department-of-war.md covered at the connection-type level — that entry placed RKLB and YSS on the SDA procurement node; this one disaggregates the node into the specific programs and asks whether the portfolio's space holdings ride one program or several. The National Reconnaissance Office (NRO) and the National Geospatial-Intelligence Agency (NGA) are intelligence-community agencies, not Space Force; the Missile Defense Agency (MDA) and DARPA are separate DoW agencies. They are named here where portfolio tickers touch them, because the purpose of this entry is to show how defense-space exposure distributes — or fails to distribute — across these distinct customers.

Programs and contract vehicles

SDA Proliferated Warfighter Space Architecture (PWSA) — Tranche layers

Three portfolio holdings carry PWSA exposure, at three different depths. York Space Systems sits deepest: the SDA, named by context as the PWSA contract counterparty, accounted for 'substantially all' FY2025 revenue and backlog and approximately 99% of Q1 2026 revenue, principally under PWSA Tranche 0, 1, and 2 (atom YSS-0001628280-26-035244, reported_results[2]; atom YSS-0001628280-26-019923, background). Rocket Lab disclosed a December 17, 2025 award under the SDA Tracking Layer Tranche 3: 18 satellites for the PWSA, total potential value $816M ($806M base plus $10M options), final satellite delivery for launch expected 2029 (atom RKLB-0001628280-26-018770, reported_results[8]). Intuitive Machines carries PWSA exposure through the Lanteris (formerly Maxar Space Systems) business it acquired January 13, 2026: the Q1 2026 10-Q names 'Tracking Layer' as a Lanteris program contributing $39.5M of the quarter's $141.6M product revenue (atom LUNR-0001628280-26-035236, reported_results[2]). The SDA Tranche 3 contract terms themselves are flagged in LUNR's not_addressed list, but the Tracking Layer revenue line is dollar-quantified at the program level.

Missile Defense Agency — SHIELD / Golden Dome

York Space Systems disclosed an award under the MDA's SHIELD IDIQ with a $151B ceiling, and management states it is positioned to pursue Golden Dome task orders; the YSS 10-K cites a Golden Dome FY2026 budget of approximately $37B and approximately $175B total spend (atom YSS-0001628280-26-019923, forward_guidance[3]). The YSS 10-K also carries an explicit risk-factor caveat: if the SDA is not centrally involved in Golden Dome contracting, the company will need to compete for awards from new customers (atom YSS-0001628280-26-019923, risk_factor_deltas[2]). IDIQ vehicles set a ceiling on potential task orders and do not guarantee revenue.

NRO / NGA — intelligence imagery

BlackSky's FY2025 10-K describes its primary customers as U.S. defense and intelligence agencies including the NRO, NGA, and U.S. Space Force, plus international governments (atom BKSY-0001753539-26-000032, background). The NRO is the only named customer in the atoms in scope; FY2025 revenue concentration shows four customers each above 10% aggregating 89% of revenue, and the Space-Based Intelligence & AI Services segment decline of 7.1% is attributed to a reduction in imagery revenue under one NRO contract (atom BKSY-0001753539-26-000032, reported_results[1], reported_results[15]). BlackSky's connection runs through ISR and imagery-subscription programs, not PWSA — a separate contract structure on a separate budget line.

DARPA / service-branch procurement

Redwire's Q1 2026 awards include a $44M DARPA Otter Phase 2 contract for VLEO satellite development on the SabreSat platform and Marine Corps purchase orders totaling more than $20.0M for the Advanced Navigation Stalker Block 30 UAS (atom RDW-0001819810-26-000060_ex99-1, quantified_terms[18], quantified_terms[19]). Redwire's Defense Tech segment serves the DoW broadly per its FY2025 10-K background (atom RDW-0001819810-26-000029, background). Redwire's Q1 2026 10-Q records the FY2026 DoD appropriation of $839.2B including $13.4B for missile defense and space under 'Golden Dome for America' as policy context (atom RDW-0001819810-26-000063, reported_results[25]). No SDA or Space Force named contract appears in Redwire's atoms — its defense-space exposure runs to DARPA and the Marine Corps, not the SDA.

BlackSky AFRL

BlackSky's Q1 2026 earnings release discloses an Air Force Research Laboratory sole-source IDIQ award for up to $99M for a large-aperture Earth observation payload (atom BKSY-0001753539-26-000057_ex99-1, derived[5]). AFRL is a Department of the Air Force science organization; the award is a program distinct from both PWSA and the NRO imagery line.

Concentration analysis

(a) The PWSA-concentration map. The defense-space sleeve partitions cleanly. PWSA-dependent set: YSS, RKLB, LUNR (via Lanteris). Other-program set: BKSY (NRO/NGA imagery, AFRL), RDW (DARPA, Marine Corps). Within the PWSA set the depth varies. YSS is a near-pure-play: approximately 99% of Q1 2026 revenue on PWSA Tranches 0/1/2 — a single-customer concentration the YSS 10-Q names as an explicit risk factor. RKLB's Tranche 3 award is $816M of potential value against a Q1 2026 revenue base of $200.3M (atom RKLB-0001819994-26-000027_ex99-1, reported_results[0]); RKLB does not disclose a government-versus-commercial revenue split in its atoms, so the PWSA share of RKLB revenue cannot be quantified, but the company is end-to-end across launch and space systems with a $2.2B backlog, so PWSA is one program among many. LUNR's PWSA exposure is the $39.5M Tracking Layer line, roughly 21% of Q1 2026 product revenue and roughly 6% of pro-forma combined FY2025 revenue — a program within the acquired Lanteris portfolio, not a company-defining dependency.

(b) Is the defense-space sleeve single-program-concentrated? Partially concentrated. The data does not support a "single-program" verdict — BKSY and RDW touch no PWSA program in their atoms — but it does not support "genuinely spread" either, because three of five holdings ride PWSA. The accurate verdict: the sleeve is partially PWSA-concentrated, with the concentration loading almost entirely onto one name. YSS carries the program dependency in a form that would move its whole revenue base; RKLB and LUNR carry PWSA as a contributing program against diversified bases. So the hidden single-program risk the decision question probed for is real but narrow: it is a YSS-specific concentration that RKLB and LUNR share in attenuated form, not a sleeve-wide funnel.

(c) Shared-program correlation. YSS, RKLB, and LUNR depend on the same program. A single program-level event — an SDA Tranche cancellation, a PWSA budget reprofile, a Tracking Layer schedule slip — would reach all three at once, though with effect sized to each one's PWSA share: near-total for YSS, partial for RKLB, modest for LUNR. This is the same systemic-factor logic the NRC entry applied to Executive Order 14300 and the NASA entry applied to the Lunar Gateway pause. The main analyst should treat PWSA as a correlated factor across the three even though only YSS names it as a top-line risk.

(d) Golden Dome as an emerging cross-ticker node. Golden Dome appears in two tickers' atoms in different forms: as a forward opportunity YSS is positioned to pursue through the MDA SHIELD IDIQ, and as a $13.4B FY2026 appropriation line Redwire records as policy context. It is not yet a contracted-revenue node for any portfolio holding. If Golden Dome task orders begin landing as awards across multiple holdings, it would become a high-density node worth its own entry; for now it is a watch item, named here so the next pilot can track whether it converts from budget context to contract.

Source atoms referenced

• RKLB: 0001628280-26-018770 (424B5, 2026-03-17) — SDA Tracking Layer Tranche 3, $816M total potential value, 18 PWSA satellites; 0001819994-26-000027_ex99-1 (8-K, 2026-05-07) — Q1 2026 total revenue $200.3M.
• YSS: 0001628280-26-019923 (10-K, 2026-03-20) — SDA 'substantially all' FY2025 revenue, SHIELD IDIQ $151B ceiling under MDA, Golden Dome $37B FY2026 budget, risk if SDA not central to Golden Dome; 0001628280-26-035244 (10-Q, 2026-05-15) — one customer approximately 99% of Q1 2026 revenue under PWSA Tranches 0/1/2; 0001628280-26-035132_ex99-1 (8-K, 2026-05-14) — IDIQ awards across two national security mission areas.
• LUNR: 0001628280-26-035236 (10-Q, 2026-05-15) — Lanteris 'Tracking Layer' program $39.5M of Q1 2026 product revenue.
• BKSY: 0001753539-26-000032 (10-K, 2026-03-17) — NRO/NGA/U.S. Space Force named customers, NRO contract imagery-revenue reduction, four-customer 89% concentration; 0001753539-26-000057_ex99-1 (8-K, 2026-05-07) — AFRL sole-source IDIQ up to $99M.
• RDW: 0001819810-26-000029 (10-K, 2026-02-27) — Defense Tech segment for the DoW; 0001819810-26-000060_ex99-1 (8-K, 2026-05-06) — DARPA Otter Phase 2 $44M, Marine Corps Stalker Block 30 $20M+; 0001819810-26-000063 (10-Q, 2026-05-07) — FY2026 DoD appropriation $839.2B with $13.4B Golden Dome.