NAWCAD is seeking industry input through a Request for Information for a Portable Oxygen Regulator Test Set (PORTS) to inform procurement planning. Respondents should provide administrative details and technical information on existing marketplace products that substantially meet performance requirements, or on products under development or R&D that could be made available to the marketplace within 24 months. Feedback may also include recommendations to improve PORTS and questions to clarify requirements. This RFI is for information and planning only, does not constitute a solicitation, will not result in a contract award, and the Government will not pay for responses. Responses are limited to ten pages and may be submitted by email, with proprietary information safeguarded; respondents will be notified of the review results.