The Defense Health Agency intends to award a sole-source, firm-fixed-price purchase order to REES SCIENTIFIC CORPORATION for the REES Temperature Monitoring System. The work will be performed at Naval Medical Center San Diego and affiliated Branch Medical Clinics. The period of performance runs from September 10, 2026, to September 9, 2031, including a base year and four option years for annual preventative maintenance and services. No budget amount is specified in the description. This notice is not a request for quotes, but interested parties capable of meeting the requirement may submit their capabilities in writing by the specified deadline.