Please review the Market Research Spreadsheet (which is included in this posting) for the NSN(s) required and provide any sources that may be able to manufacture these items. The only approved sources... Please review the Market Research Spreadsheet (which is included in this posting) for the NSN(s) required and provide any sources that may be able to manufacture these items. The only approved sources for these NSN(s) currently are listed on the Market Research Spreadsheet. All information may be submitted directly to the Contract Specialist, Michael J Allen at Michael.2.allen@dla.mil. This information must be provided by the response date of this sources sought.