This posting provides a redacted J&A for a sole-source contract modification for Detail Design and Construction (DD&C) of Yard Repair, Berthing and Messing Barge(s) (YRBM). This J&A explains the ratio... This posting provides a redacted J&A for a sole-source contract modification for Detail Design and Construction (DD&C) of Yard Repair, Berthing and Messing Barge(s) (YRBM). This J&A explains the rationale for utilizing other than full and open competition for this modification. This redacted J&A protects proprietary and sensitive information while providing public visibility into the justification for the sole-source action.