Not an SEC registrant

Mission Support & Test Services LLC

Customers

1 federal agency

Suppliers

10 federal subcontractors

Largest customer

—

No % disclosed

Named-customer revenue

—

No estimate available

Federal obligations

$1.0B

FY2026 · USAspending.gov

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available) or federal dollars obligated. Each side is scaled on its own; dashed outlines are named without a figure. Click a band to open its source.

Federal contracts 1

Agencies that awarded contracts to this company, from USAspending.gov. Dollars are obligated amounts as reported, not estimates; $1.0B in the latest fiscal year shown per agency.

Agency	Obligated	Fiscal year	Awards	Trend	Largest award
Department of Energy Department of Energy	$1.0B	FY 2026	1	$837.8M → $1.1B → $994.6M → $1.0B	DENA0003624
IGF::CL,CT::IGF CONTRACT AWARD DE-NA0003624 TO THE MISSION SUPPORT AND TEST SERVICES LLC (MSTS) FOR THE MANAGEMENT AND OPERATION OF THE DEPARTMENT OF ENERGY NATIONAL NUCLEAR SECURITY ADMINISTRATION'S NEVADA NATIONAL SECURITY SITE. Award DENA0003624 on USAspending.gov ↗ Largest of 1 awards in FY2026: $1.0B obligated

Federal subcontractors 10

Companies this contractor subcontracted work to on federal prime contracts. From USAspending.gov subaward reports; amounts are as reported by the prime contractor, latest report per subaward, $500K+ a year.

Company	Subawards	Fiscal year	Count	Largest subaward
Spectra Tech, INC.	$7.0M	FY 2025	1	DENA0003624
SCMC WRAP AGREEMENT WS190222 Prime award DENA0003624 on USAspending.gov ↗ Subaward 320741: $7.0M · Department of Energy (DOE)
Enercon Federal Services INC	$2.6M	FY 2025	1	DENA0003624
ENGINEERING SERVICES Prime award DENA0003624 on USAspending.gov ↗ Subaward 273631: $2.6M · Department of Energy (DOE)
Telecom International LLC	$2.6M	FY 2025	1	DENA0003624
SATELLITE SERVICES Prime award DENA0003624 on USAspending.gov ↗ Subaward 256829: $2.6M · Department of Energy (DOE)
Tri-city Industrial, LLC	$2.5M	FY 2025	1	DENA0003624
AUTOMOTIVE PARTS AND SUPPLIES Prime award DENA0003624 on USAspending.gov ↗ Subaward AGR-0000022: $2.5M · Department of Energy (DOE)
Government Scientific Source INC	$2.5M	FY 2025	1	DENA0003624
AUTOMOTIVE PARTS AND SUPPLIES Prime award DENA0003624 on USAspending.gov ↗ Subaward AGR-0000024: $2.5M · Department of Energy (DOE)
Navarro Research And Engineering, INC.	$1.1M	FY 2025	1	DENA0003624
SEPT 2025 $848,755.42 AUG 2025 $262,170- INFRASTRUCTURE ENGINEERING SUPPORT SERVICES Prime award DENA0003624 on USAspending.gov ↗ Subaward AGR-0000026: $1.1M · Department of Energy (DOE)
Sigma Science, INC	$950.0K	FY 2025	1	DENA0003624
NUCLEAR SAFETY BASIS SUBCONTRACT Prime award DENA0003624 on USAspending.gov ↗ Subaward AGR-0000017: $950.0K · Department of Energy (DOE)
Sargent & Lundy Engineering Services, INC.	$709.1K	FY 2025	1	DENA0003624
ENGINEERING SERVICES Prime award DENA0003624 on USAspending.gov ↗ Subaward 274088: $709.1K · Department of Energy (DOE)
EPC Service INC	$538.7K	FY 2025	1	DENA0003624
BUILDING RENOVATIONS Prime award DENA0003624 on USAspending.gov ↗ Subaward 319101: $538.7K · Department of Energy (DOE)
Global Engineering & Technology INC	$523.9K	FY 2025	1	DENA0003624
AUG 2025 - $68,134.50 JUL 2025 - $455,734.50 NUCLEAR SAFETY BASIS SERVICES Prime award DENA0003624 on USAspending.gov ↗ Subaward AGR-0000005: $523.9K · Department of Energy (DOE)

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