Sources Sought DEPT OF DEFENSE DEPT OF THE ARMY is seeking information for the upgrade and digital fire control system (DFCS) for the M109 Howitzer. This notice is for government planning purposes only and does not constitute a request for proposal or invitation for bid. The Army Contracting Command – Detroit Arsenal is gathering knowledge of interest, capabilities, and qualifications of small and large businesses for potential future acquisition. Participation in the survey is voluntary and no compensation will be provided.