The U.S. Army requires a modernized, portable, self-contained oxygen generation system capable of supporting life-saving medical operations in austere environments at Role of Care 3. This Request for Prototype Proposals (RPP) seeks solutions that demonstrate a self-contained, portable oxygen generation system using Pressure Swing Adsorption (PSA) or equivalent technology. The prototype must produce medical-grade oxygen meeting United States Pharmacopeia (USP) standards, operate on single or double-voltage power with automatic voltage detection, and weigh no more than 350 pounds. Please review the attached Request for Prototype Proposals and supporting documents for full requirements and submission instructions. See Attachments.