The Missile Defense Agency (MDA) intends to award a sole source contract to Raytheon Company for engineering services related to the Multi-Spectral Targeting Sensor (MTS). This contract will encompass research, development, operations, maintenance services, modifications to existing MTS sensors, and procurement of new sensors, justified under FAR regulations. The MTS is critical for national defense, and Raytheon, as the original equipment manufacturer, is recognized as the only provider capable of meeting the MDA's specific requirements. The contract will be structured as an indefinite delivery indefinite quantity (IDIQ) with a combination of cost reimbursement and fixed-price orders over a 10-year period, identified under contract number HQ0860-25-D-0001. Interested parties may submit capability statements by the specified deadline, but the MDA will not reimburse costs incurred in responding to this notice. For inquiries, contact Ambros Montoya at ambros.d.montoya.civ@mda.mil or Marcus A. Mansfield at marcus.mansfield@mda.mil.