This is a notice of intent for a sole-source contract to Raytheon Company for hardware and software life cycle management support of the AN/TPX-61(V)3 IFF interrogator for the MADIS program. The period of performance is one year with four option years. The contract will be a hybrid Cost Reimbursement / Firm-Fixed-Price type. The work is for the Program Manager Ground Based Air Defense within the Marine Corps. Interested parties may identify their interest and capability by 12:00pm Eastern Daylight Time on 16 March 2026.