The Marine Corps Installations Command (MCICOM) Headquarters (HQ) Contracting Office, located in Arlington, VA, intends to negotiate and award a sole-source modification to increase the shared maximum ordering ceiling of the MCICOM Professional Services Support (PSS) Multiple Award Contract (MAC) Lot 1 (Unrestricted). The affected Indefinite-Delivery/Indefinite-Quantity (IDIQ) contracts are: M95494-25-D-5001 (Booz Allen Hamilton Inc) M95494-25-D-5002 (Concurrent Technologies Corp) M95494-25-D-5003 (KPMG LLP) Description of Action: The Government intends to increase the Lot 1 shared maximum ordering ceiling by $96,718,238.12 from $101,427,376.71 to $198,145,614.83. This modification is necessary to address an unanticipated surge in high-priority, in-scope requirements driven by new Department of War (DoW) mandates, including the 2030 Barracks Initiative, enterprise-wide Facility-Related Control Systems (FRCS) cybersecurity, and other needs identified in the Future Years Defense Program (FYDP). This action increases only the contract ceiling capacity and does not extend the current ordering period, which concludes on 5 November 2029, nor does it alter the scope of the base contracts. Statutory Authority: This action will be executed on a basis of other than full and open competition (via a class Justification & Approval) pursuant to 10 U.S.C. § 3204(a)(1), as implemented by FAR 6.103-1: Only one responsible source and no other supplies or services will satisfy agency requirements. The Government has determined that the existing Lot 1 prime contractors are the only sources capable of immediately absorbing this surge in critical requirements without causing unacceptable delays and substantial duplication of costs. Justification Rationale: A new competitive action to fulfill these urgent requirements would result in an estimated procurement delay of 12-18 months, which would severely disrupt ongoing MCICOM operations and hinder the execution of critical DoW initiatives. The increase in value supported by the J&A is anticipated to carry this contract vehicle for the 18 months necessary to put a new IDIQ in place. Furthermore, transitioning to a new vendor pool would incur substantial duplicated costs (estimated at $2.85M) related to procurement administration, security clearance processing, and project transition. The incumbent contractors are already vetted, hold the required clearances, and possess the institutional knowledge necessary to execute these emergent requirements seamlessly. While this ceiling increase is being executed on a sole-source basis, the Government will continue to foster maximum competition by competing all future task orders among the three existing prime contract holders in accordance with FAR 16.505 fair opportunity procedures. Instructions to Interested Parties: This Notice of Intent is not a request for competitive proposals. However, all responsible sources may submit a capability statement or proposal which shall b…