Contractor profile

Mission Support & Test Services LLC

FY2026 ended Sep 30 · data still posting · data as of 2026-11-01†

† DoD contract data posts to USAspending about 90 days after award.

prime recipient of federal awards · Joint venture: Honeywell / Amentum / HII Nuclear Inferred · UEI YSYZHPCG4XB3 Source
$1B
Obligated
FY2026 · data still posting
2
Funding agencies
100%
From Energy
0%
Non-competed
1
States
100%
In Nevada
2
Industries

In FY2026, Mission Support & Test Services LLC received $1B in federal awards from 2 agencies, 100% of it from the Department of Energy, with 100% of the work performed in Nevada. Across FY2020 to FY2026 its recorded total is $6.4B. FY2026 ended Sep 30 and its data is still posting. Computed

Where this money comes from

Source
FUNDING AGENCIES
MISSION SUPPORT & TEST S
Energy
$1B
1 other agencies
$0B
Mission Support & Test Services LLC
$1B
FY2026 obligated
band width = obligations · FY2026 · source: USASpending.gov

Where the work lands

Source
Nevada$1B

Key takeaways

Computed
FY2026 ended Sep 30 · data still posting · data as of 2026-11-01
  • Mission Support & Test Services LLC received $1B in federal obligations in FY2026 (data still posting), compared with $994.6M in FY2025.
  • It ranked #97 among federal contractors by contract obligations in FY2026 (data still posting).
  • The Department of Energy accounted for 99% of it.
  • Its largest recorded industry was Facilities Support Services, at $1B.

Obligations by year

Computed
$650.2M
FY20
$854.7M
FY21
$923.2M
FY22
$837.8M
FY23
$1.1B
FY24
$994.6M
FY25
$1B
FY26 partial
▲ 53%
FY20 to FY25

Awards

Source

Largest active awards by total value

Awards whose period of performance overlaps FY2026, by the amount obligated on each so far.

AwardIDAgencyObligatedStartEndPlace
Mission Support and Test Services LLC (Msts) for the Management and Operation of the…DENA0003624Department of Energy$7.9B2017-08-012027-11-30Nevada

Largest FY2026 awards

Awards that started in FY2026, by the amount obligated on each so far.

No award on record started in FY2026.

What it does (NAICS / PSC)

Facilities Support Services$1B
General Automotive Repair$77.7K

Competition

0%non-competed (often called no-bid), of $1B in contract obligations in FY2026Computed

This describes how contracts were awarded, not wrongdoing.

Similar federal contractors

Computed
Triad National Security, LLC$5.5B
National Technology & Engineering Solutions of Sandia, LLC$5.4B
Savannah River Nuclear Solutions LLC$3.4B
Consolidated Nuclear Security, LLC$3.3B
UT-Battelle LLC$3B
Honeywell International Inc.$2.3B
Pantexas Deterrence, LLC$1.6B
V2X Systems LLC$924.5M

Corporate family

Reported division ofHoneywell International Inc. →Inferred

Related

Why the labels? The graph is only worth anything if the links are trusted. Facts taken straight from a federal filing are Source; figures we calculate are Computed; links we infer (corporate parents, districts, similar contractors, connections between records) are Inferred, worded carefully, never asserted as fact and never a claim that one thing caused another. Spot an error? Tell us.