AMENDMENT TO CLOSING TIME: Please disregard the Ariba Discovery posting response deadline closing time and CanadaBuys posting closing time. All required supporting documentation and bid submission must be submitted by May 13, 2023 at 2:00 PM EST. All bids submitted after2:00 PM EST will result in the bid being declared non-responsive. DND conducts a variety of research and development (R&D) activities to develop and improve specific capabilities that are required to support its unique operational mandate. As part of the R&D activities, non-standard and specialized equipment and components that are not commercially available are often necessary. To support the R&D activities, DND has a requirement for design, manufacture, and modification of a variety of prototype one-of-a-kind parts, assemblies, and experimental components. This contract is from June 1, 2023 to May 31, 2026 and contains two 1 year option periods.