The Department of the Navy intends to award a sole-source, firm-fixed-price order to CapeSym, Inc. of Natick, Massachusetts for specialized crystal scintillators and associated modeling services. The government's stated position is that only this source is capable of meeting the requirement, though it will consider responses from other parties. Interested parties may submit questions or comments via email for consideration by July 23, 2025. All responding vendors must be registered in the System for Award Management (SAM).