The Department of Homeland Security, specifically the U.S. Coast Guard's C5I Service Center, is issuing a special notice regarding a proposed sole-source contract for support services related to their Time Control Industrial (TCI) and Depot Management (DPOM) systems. The contract is intended to be awarded to Heuristic Management Systems Inc. (HMS Software) due to the proprietary nature of their software, which necessitates that only HMS can provide the required support, upgrades, and maintenance. This procurement is critical for ensuring the continued functionality and enhancement of the Coast Guard's software systems, which are vital for operational efficiency. Interested vendors are invited to submit their qualifications in writing to the designated contacts, Brianna Riffle and Mark Rushing, by 10:00 AM ET on April 7, 2025, as this notice is not a Request for Quotation (RFQ) and emphasizes written communication only.