The Department of Defense, through the Department of the Army, is seeking contractors for the construction of environmental protection shelters at Ellsworth Air Force Base (AFB) in South Dakota. This project involves the construction of specialized structures designed to protect the B-21 West Alert Apron, which is crucial for maintaining operational readiness and environmental compliance. Interested contractors should note that the procurement falls under the NAICS code 236220, focusing on commercial and institutional building construction, with a presolicitation notice currently available. For further inquiries, potential bidders can contact Margarette Wolfe at margarette.e.wolfe@usace.army.mil or by phone at 402-995-2063.