This is a single-source, noncompetitive solicitation for SENTINEL Secure Chat Servers, with the Government intending to negotiate and award a firm-fixed price purchase order solely to Trusted Solutions LLC. While it is a sole-source action, all responsible sources may submit a capability statement, proposal, or quotation for the agency's consideration. The procurement is for commercial items under NAICS code 541511. The performing entity is identified as a small business.