ATEC HQ 005 - Expeditionary Secure Cross-Domain Modernization

Update - 18 August 2026 - ATEC_RIW26_005 Phase 1 submission deadline is being extended until 1630 EDT on Friday 21 August 2026. Update - 12 August 2026 - ATEC_RIW26_005 Please review the attached Q&A brief document and the updated version to the CfS attached with this update. The Q&A period has ended. Any questions submitted from this point onward are not guaranteed to be answered. Send all emails and solution submissions to ACC contracting POCs, Whitney Jackson and Dennis Beauclair, Jr. (DJ), listed in this posting. When you submit your phase 1 solution, you will receive a reply email acknowledging receipt. If you do not receive an email acknowledging receipt by the next morning from either Whitney Jackson or Dennis Beauclair, Jr. (DJ) then please follow up your email with your original submission email attached. 5 August 2026 - Call for Solutions (CfS) The Army Contracting Command - Aberdeen Proving Ground (ACC-APG), Division D, on behalf of the Army Test and Evaluation Command (ATEC) is seeking innovative solutions for Expeditionary Secure Cross-Domain Modernization. The CfS PDF document outlines the problem, attributes, instructions, submission requirements, and evaluation criteria. The deadline to submit questions is 10 August 2026 at 1500 EDT. All emails related to this CfS must have the Subject Line: "Call for Solution - [Your Company Name] - ATEC_RIW26_005" Phase 1 submission deadline is 19 August at 1500 EDT. This Call for Solutions is issued in accordance with the Army Open Solicitation (AOS); W9128Z-25-S-A002 the link to the AOS posting can be found in this CfS post s link section. Please review the AOS posting and associated attachments, in addition to this call for solutions posting, for further information on how the AOS is structured.