This is a market research Request for Information (RFI) from the U.S. Air Force to identify sources capable of designing, integrating, and testing a modernized Defensive Weapon System (DWS) for the MH-139A helicopter. The objective is to upgrade the current M-240D DWS, with a focus on a weapon-agnostic mounting capability and components that are commercially or militarily available. The effort is strictly a post-production field retrofit for the existing fleet, requiring technical support during initial implementation and a post-integration period. No budget, submission timeline, or performance location is specified in the description. Interested parties must provide a comprehensive response covering company information, technical capability, cost and schedule estimates, and small business utilization.