The U.S. Coast Guard seeks a firm-fixed-price contract for thruster system field engineering support, including calibration and programming, for the USCGC WALNUT (WLB 205) following an overhaul. Work will be performed at GMD Shipyard Corp. in Brooklyn, NY, or as directed, with a performance period not exceeding seven calendar days from award. The contract is a total small business set-aside under NAICS 811210, with award based on best value considering price, technical capability, and past performance. Offerors must submit firm-fixed-price proposals demonstrating experience with DECS-250, AEM-2020, and marine thruster drive systems. The government intends to evaluate offers and award without discussions.