The requirement covers all services and supplies needed to maintain current Operation and Maintenance Services for dark fiber, including programmatic, engineering, and other technical services. The government intends a sole-source award under Other Than Full and Open Competition to the current contractor, By Light Professional IT Services LLC, citing FAR 6.103-1 and only one responsible source. The award is intended by November 30, 2026, to prevent a lapse in service and unacceptable delays while transition to a competitively awarded follow-on contract is completed.