Audit of the DoD’s Progress in Implementing Secure Fifth‑Generation Wireless Communications Technologies

Title Full

Date Issued

Monday, September 29, 2025

Submitting OIG

Department of Defense OIG

Agencies Reviewed/Investigated

Department of Defense

Report Number

DODIG-2025-171

Report Type

Audit

Agency Wide

Yes

Number of Recommendations

Questioned Costs

Funds for Better Use

Report updated under NDAA 5274

Open Recommendations

This report has 4 open recommendations.

Recommendation Number	Significant Recommendation	Recommended Questioned Costs	Recommended Funds for Better Use
D-2025-0171-D000CX-0001-0001.a	No	$0	$291,500,000
Rec 1.a: The DoD recommended that the Under Secretary of Defense for Research and Engineering develop or revise their existing procedures to require that implementation plans be developed based on industry best practices and include, at a minimum, timelines with specific milestones, roles and responsibilities, and metrics for evaluating and monitoring progress.
D-2025-0171-D000CX-0001-0001.b	No	$0	$211,900,000
Rec 1.b: The DoD recommended that include in the procedures developed in accordance with Recommendation 1.a, a requirement to review and update implementation plans, at a minimum of once each year.
D-2025-0171-D000CX-0001-0002.a	No	$0	$0
Rec. 2.a: The DoD recommended that the DoD Chief Information Officer review and update the 5G Implementation Plan to include timelines with specific milestones, roles and responsibilities, and metrics for evaluating and monitoring the DoD's progress toward implementing 5G.
D-2025-0171-D000CX-0001-0002.b	No	$0	$0
Rec. 2.b: The DoD recommended that the DoD Chief Information Officer periodically reassess and update the 5G Implementation Plan, as needed.