The Department of Defense, specifically the U.S. Army Corps of Engineers Omaha District, is seeking responses to a Sources Sought Notice for the construction of five new pre-engineered metal Environmental Protection Shelters (EPSs) at Ellsworth Air Force Base in South Dakota. The project involves a design-bid-build delivery method and includes the construction of approximately 20,000 square feet of facilities designed to accommodate B-2A aircraft maintenance, along with associated airfield paving and support kiosks. This initiative is critical for enhancing the operational capabilities of the B-21 program and ensuring compliance with various Department of Defense construction standards. Interested contractors must submit their responses by 2:00 PM on January 28, 2025, to James Willett at james.r.willett@usace.army.mil, with a project magnitude estimated between $25 million and $100 million, and an anticipated contract award in the second quarter of fiscal year 2026.