The Department of Defense, through the U.S. Army Corps of Engineers – Tulsa District, is preparing to solicit bids for the construction of a B-21 Software Integration Lab (SIL) at Tinker Air Force Base in Oklahoma. This project involves the renovation of approximately 293,868 square feet of an existing facility to create a Software Sustainment Program Office, including extensive modifications to meet security and acoustic requirements, as well as the construction of a new radar dome and an exterior fire escape staircase. The estimated construction cost ranges from $100 million to $250 million, with a project duration of approximately 912 calendar days, and the anticipated solicitation issuance date is around May 12, 2025, with proposals due by June 11, 2025. Interested parties can contact Brian Welch at brian.j.welch@usace.army.mil or Julie S. Hill at julie.s.hill@usace.army.mil for further information.