The Department of Defense, specifically the Army's C5ISR Center, is issuing a Request for Information (RFI) regarding Signals of Opportunity (SoOP) technologies aimed at enhancing Positioning, Navigation, and Timing (PNT) capabilities in contested environments. The Army is particularly interested in alternatives to GPS, focusing on Low Earth Orbit (LEO) satellite constellations and potentially non-space-based transmitters, with an emphasis on solutions that offer low size, weight, power, and cost (SWAP-C) for dismounted hardware. This initiative is crucial for ensuring reliable navigation and timing in scenarios where GPS signals may be compromised. Interested parties must submit detailed technical information on their current SoOP technologies by November 21, 2024, to the C5ISR Center's Strategic Engagements Team at usarmy.apg.devcom-c5isr.mbx.rti-industry-engagement@army.mil. This RFI is for information gathering purposes only and does not guarantee contract awards or reimbursement for costs incurred.