Please see attachments - RFI Attachment and Draft PWS. The Army Contracting Command-Aberdeen Proving Ground (ACC-APG) is issuing this Request for Information - Sources Sought as a means of conducting ... Please see attachments - RFI Attachment and Draft PWS. The Army Contracting Command-Aberdeen Proving Ground (ACC-APG) is issuing this Request for Information - Sources Sought as a means of conducting market research to identify parties having an interest in and the resources to support this requirement for Headquarters, Department of the Army (HQDA), Deputy Chief of Staff (DCS), G-3/5/7.