The Department of Defense, specifically the U.S. Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC), is seeking information from potential contractors regarding subterranean environments capable of supporting live-fire exercises with energetics weighing up to 5,000 lbs. TNT Net Explosive Weight. The initiative aims to secure access to a specialized training site in Kentucky that meets specific requirements, including secure storage, classroom facilities, underground communications, and compliance with safety standards, to facilitate military training and research initiatives. Interested vendors are invited to submit their capabilities, experience, and business status by 1:00 PM Central Standard Time on January 12, 2026, to Janalyn Dement at Janalyn.H.Dement@usace.army.mil, as this RFI is part of the preliminary market research before a potential Request for Proposal (RFP).