The government intends to negotiate a sole source contract with Coastal Connections for specific brand-name fiber optic cables, including end-cap and single-mode PM cables with detailed performance specifications. These cables are required for compatibility with existing laboratory setups that currently use Coastal Connections products, as alternate brands could degrade system performance. This is a notice of proposed contract action only, not a request for competitive quotes, but responsible sources may submit capability statements for consideration. The anticipated award date is on or before 25 September 2026. No performance location or budget amount is specified.