The Department of Defense, specifically the United States Marine Corps (USMC), is seeking information from vendors regarding the Marine Corps Observation and Sensing System (OSS), aimed at enhancing force protection and advanced capabilities for detecting and tracking various threats. The RFI focuses on commercially available optic and active sensor technologies with a Technology Readiness Level (TRL) of 8 or 9, which can support the detection, classification, and identification of manned and unmanned vehicles and personnel in diverse operational environments. This initiative is crucial for improving military capabilities in Expeditionary Advanced Base Operations (EABO) missions, utilizing advanced sensor technologies to ensure effective surveillance and response. Interested vendors must submit their responses by October 8, 2024, to the designated contacts, Shannon Graves and Katherine Presutto, via email, with a maximum of ten pages for the executive summary.