The Defense Health Agency Contracting Activity intends to negotiate on a sole-source basis with Standard Integrated Security Technologies (IST) for the Standard Kokua Service Plan, covering equipment maintenance for the Navy Environmental and Preventive Medicine Unit Six (NEPMU6) Directorate. The sole-source justification is based on IST’s proprietary programming and integration, which cannot be serviced by alternative vendors without risking system failure, as confirmed by government and industry consultations. This is a presolicitation notice under simplified acquisition procedures with no set-aside restrictions, classified under NAICS 541330 with a small business size standard of $25.5 million. No solicitation document exists, and this is not a request for competitive proposals; however, interested parties may submit capability statements with technical data and cost to demonstrate their ability to provide the same service. The government will consider all responses solely to determine whether to conduct a competitive procurement.