Mission Support and Test Services 401(k) and pension plans

Mission Support and Test Services LLC, Las Vegas, NV. EIN 81-0705502. Annual reports 2009–2025. Also filed as Wackenhut Services, Incorporated; Independent Guard Assoc. of Nevada; G4S Government Solutions,inc.(d/B/A Wsi); Centerra-Nevada/Igan Retirement Plan.

Mission Support and Test Services LLC has 5 active retirement plans on file. The largest is the Mission Support and Test Services LLC (MSTS) Employee 401(k) Plan, with 3,243 participants and $705 million in assets in 2025. Fidelity has been its recordkeeper since 2009.

Active plans: 5
Participants: 11,731
Plan assets: $1.4 billion
401(k) recordkeeper: Fidelity
Plans on file: 5
Industry: Professional services

All 5 plans

Active plans first

Mission Support and Test Services LLC (MSTS) Employee 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 002Employer EIN 81-0705502
Participants (2025): 3,243
Net assets (2025): $705 million
Recordkeeper: Fidelity2009–2025
Plan administrator: Mission Support and Test Services LLC
Po Box 98521 M/S NLV010
Las Vegas, NV 89193
(702) 295-7200As filed for 2025
In effect since: July 1, 1972

Earlier sponsor: National Security Technologies, LLC (2009–2016).

Earlier plan names: National Security Technologies, LLC (Nstec) Employee Thrift Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	3,243	$705 million	Fidelity
2024	3,150	$612 million	Fidelity
2023	3,113	$530 million	Fidelity
2022	2,748	$427 million	Fidelity
2021	2,636	$539 million	Fidelity
2020	2,521	$484 million	Fidelity
2019	2,518	$396 million	Fidelity
2018	2,356	$329 million	Fidelity
2017	2,301	$361 million	Fidelity
2016	2,236	$304 million	not listed
2015	2,172	$299 million	Fidelity
2014	2,314	$324 million	Fidelity
2013	2,377	$313 million	Fidelity
2012	2,437	$272 million	Fidelity
2011	2,557	$248 million	Fidelity
2010	2,573	$246 million	Fidelity
2009	2,579	$217 million	Fidelity

Mission Support and Test Services LLC (MSTS) Represented Employee 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 003Employer EIN 81-0705502
Participants (2025): 998
Net assets (2025): $58.8 million
Recordkeeper: Fidelity2009–2025
Plan administrator: Mission Support and Test Services LLC
Po Box 98521 M/S NLV010
Las Vegas, NV 89193
(702) 295-7200As filed for 2025
In effect since: January 1, 1989

Earlier sponsor: National Security Technologies, LLC (2009–2016).

Earlier plan names: National Security Technologies, LLC (Nstec) Represented Employee Thrift Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	998	$58.8 million	Fidelity
2024	926	$52.4 million	Fidelity
2023	980	$41.2 million	Fidelity
2022	755	$25.0 million	Fidelity
2021	686	$31.9 million	Fidelity
2020	638	$27.8 million	Fidelity
2019	716	$23.3 million	Fidelity
2018	606	$17.9 million	Fidelity
2017	574	$18.9 million	Fidelity
2016	576	$16.2 million	not listed
2015	568	$15.9 million	Fidelity
2014	541	$16.5 million	Fidelity
2013	590	$16.1 million	Fidelity
2012	611	$14.6 million	Fidelity
2011	650	$13.4 million	Fidelity
2010	647	$13.7 million	Fidelity
2009	658	$12.5 million	Fidelity

Mission Support and Test Services LLC (MSTS) Employee Retirement Plan

Pension (defined benefit)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 81-0705502
Participants (2024): 6,691
Net assets (2024): $533 million
Last listed administrator: Pension Benefit Information2012
Plan administrator: Mission Support and Test Services LLC
Po Box 98521 M/S NLV010
Las Vegas, NV 89193
(702) 295-4377As filed for 2024
In effect since: January 1, 1971

Earlier sponsors: National Security Technologies, LLC (2009–2016); Mission Support and Test Services LLC (MSTS) (2017–2019).

Earlier plan names: National Security Technologies, LLC (Nstec) Employee Retirement Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	6,691	$533 million	not listed
2023	6,832	$558 million	not listed
2022	6,674	$520 million	not listed
2021	6,588	$697 million	not listed
2020	6,564	$659 million	not listed
2019	6,624	$602 million	not listed
2018	6,448	$498 million	not listed
2017	6,410	$556 million	not listed
2016	6,348	$493 million	not listed
2015	6,278	$476 million	not listed
2014	6,343	$497 million	not listed
2013	6,380	$449 million	not listed
2012	6,462	$412 million	Pension Benefit Information
2011	7,348	$398 million	not listed
2010	7,394	$389 million	not listed
2009	7,327	$343 million	not listed

NNSS Igan Pension Plan

Pension (defined benefit)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 88-6023904
Participants (2024): 474
Net assets (2024): $42.9 million
Plan administrator: Mission Support and Test Services LLC
Po Box 98521 M/S NLV010
Las Vegas, NV 89193
(702) 295-4377As filed for 2024
In effect since: August 14, 1972

Earlier sponsors: Wackenhut Services, Incorporated (2009–2011); Independent Guard Assoc. of Nevada (2012); G4S Government Solutions,inc.(d/B/A Wsi) (2013–2014); Centerra-Nevada/Igan Retirement Plan (2015–2016).

Earlier plan names: Independent Guard Assoc. of Nevada Wackenhut Svcs, Inc. Pension Trust Fund; Independent Guard Assoc. of Nevada Pension Trust Fund; Centerra-Nevada/Igan Retirement Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	474	$42.9 million	not listed
2023	471	$41.3 million	not listed
2022	480	$37.5 million	not listed
2021	490	$43.7 million	not listed
2020	496	$40.4 million	not listed
2019	505	$36.4 million	not listed
2018	508	$31.6 million	not listed
2017	513	$33.6 million	not listed
2016	515	$30.6 million	not listed
2015	525	$29.9 million	not listed
2014	533	$31.7 million	not listed
2013	544	$31.0 million	not listed
2012	537	$27.3 million	not listed
2011	547	$24.8 million	not listed
2010	559	$25.3 million	not listed
2009	572	$22.1 million	not listed

NNSS Staff Pension Plan

Pension (defined benefit)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 002Employer EIN 90-1507796
Participants (2024): 325
Net assets (2024): $31.1 million
Plan administrator: Mission Support and Test Services LLC
Po Box 98521 M/S NLV010
Las Vegas, NV 89193
(702) 295-4377As filed for 2024
In effect since: January 1, 1978

Earlier sponsor: SOC LLC (2019–2021).

Year by year, 2019 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	325	$31.1 million	not listed
2023	333	$30.4 million	not listed
2022	335	$29.1 million	not listed
2021	341	$35.3 million	not listed
2020	343	$33.5 million	not listed
2019	349	$31.3 million	not listed

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Mission Support and Test Services LLC (MSTS) Employee 401(k) Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((702) 295-7200). That number was filed for 2025; ask for the benefits or retirement plan office.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.

All 5 plans

Mission Support and Test Services LLC (MSTS) Employee 401(k) Plan

Mission Support and Test Services LLC (MSTS) Represented Employee 401(k) Plan

Mission Support and Test Services LLC (MSTS) Employee Retirement Plan

NNSS Igan Pension Plan

NNSS Staff Pension Plan

If you had money in one of these plans

What these numbers are

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