Logical follow-on under FAR Part 16.5 is A-OK

In 2019, the Army awarded a contract for support services for the U.S. European Command (EUCOM) to KBR Services, LLC. From 2019 to 2025, the contract grew from $163 million to $2.5 billion. In April 2025, the Army issued a class justification for exception to fair opportunity that extended task orders as logical follow-ons. Amentum protested, arguing that the extension was not permissible. GAO, however, determined that it will review follow-on, sole-source decisions under FAR Part 16.5 then same way it reviews similar decisions under FAR Part 8.4: under a reasonableness standard. And based on that standard, the GAO concluded that the Army had "reasonably demonstrated that the sole‑source extension is a logical follow‑on to the EUCOM PTO, and that all LOGCAP V IDIQ contract holders had a fair opportunity to be considered for that PTO." Protest denied.

GAO: Amentum Parsons Logistics Services LLC, B-417506.15 (Feb. 4, 2026).