This is a presolicitation notice for a potential sole-source, firm-fixed-price contract to Siemens Industry Inc. for the installation of a centralized, air-gapped alarm notification system for specific cooling, hydraulic, and power systems. The period of performance is a base year plus four years. The work involves providing all labor, materials, and engineering to install specified Siemens control hardware at Edwards AFB, CA. Any vendor believing it can meet the technical requirements must submit a detailed package for government evaluation. Responses must be received no later than 10 April 2026.