The Army is seeking contractors to provide mobile, field-based retrofit and modernization services for approximately 120 fielded Joint Assault Bridge (JAB) systems, including integration of critical Engineering Change Proposals. The work involves deploying highly skilled Field Service Representatives to unit motor pools across the Continental United States and overseas to perform complex hydraulic integration, heavy armor installation, and system validation. The target award timeframe for the five-year Firm-Fixed-Price contract is the 4th Quarter of Fiscal Year 2027. No specific budget amount is mentioned. Performance of services will occur at military motor pools both CONUS and OCONUS.