The U.S. Army Corps of Engineers, Rock Island District, Mississippi River Project, seeks to procure four new Rotary Screw Air Compressors as a base requirement, with an option to purchase one additional compressor for the Locks and Dam section. Technical inquiries and questions are due no later than 2:00 PM CT on November 11, 2026. Full instructions, technical specifications, and quote submission requirements are provided in the solicitation and attachments.