NAVAIR in Patuxent River, MD, intends to award a sole-source Firm Fixed Price modification for material and labor to retrofit two air vehicles (B-2 and B-1) to an IFC-4.2.3 configuration. Contract award is anticipated in the fourth quarter of fiscal year 2027, with an anticipated period of performance of approximately 66 months. This synopsis is informational only and is not a request for competitive proposals; the requirement will be procured as a sole-source action because only one responsible source can satisfy agency requirements. NGSC is the sole designer, developer, manufacturer, integrator, and producer of the MQ-4C Triton air vehicles and ground stations, making it the only source with the requisite knowledge for the needed engineering, systems integration, and sustainment support. No formal RFP or additional written information is currently available, and subcontracting opportunities should be sought directly from NGSC.