The Army is seeking sources to provide mobile, field-based retrofit and modernization services for approximately 120 fielded Joint Assault Bridge (JAB) systems. The work involves integrating critical Engineering Change Proposals, including a Mission Ready Tablet, add-on armor, and hydraulic upgrades, to address obsolescence and improve crew survivability. Services must be performed at unit motor pools across both CONUS and OCONUS locations. The government is planning a five-year Firm-Fixed-Price contract, with a target award in the 4th Quarter of Fiscal Year 2027. Interested parties must submit a capabilities statement by 31 July 2026.