This is a sources sought notice for market research only, not a solicitation, regarding a firm-fixed-price contract to upgrade D-21 Windows 11 Alarm Reporting Software at Aviano Air Base, Italy. Interested parties are asked to provide a capability statement, past performance information, responses to specific questions, commercial pricing if available, and SAM registration details. Responses are limited to ten pages and must be submitted via email to the designated Air Force contacts. The government will not reimburse any costs associated with responding and does not intend to hold discussions or provide debriefings. Information gathered may be used to shape a future solicitation or acquisition strategy.