TOTE Services, Inc., of Jacksonville, Florida (N3220518C3101) is awarded a $12,583,408 modification under a previously awarded firm fixed-price contract (N3220518C3101) to exercise a one-year option period (P00043) for the operation and maintenance of the Sea-Based X-Band Radar Platform (SBX-1). The vessel is operated for the Missile Defense Agency to provide limited test support services and is a contingency component of the Ground Based Mid-Course Defense element of the Ballistic Missile Defense System for the U.S. Strategic Command. The vessel may also be used for other government missions as directed or placed in a reduced operating status. Work will be performed in the Pacific Ocean operating area, and is expected to be completed by September 30, 2023. This contract includes one 12-month base period, four 12-month option periods, and a six-month option under Defense Federal Acquisition Regulation 52.217-8, which, if exercised, would bring the cumulative value of this contract to $77,887,294. Working capital (Navy) funds in the amount of $12,583,408 are obligated for fiscal 2023, and will not expire at the end of the fiscal year. The U.S. Navy’s Military Sealift Command, headquartered in Norfolk, Virginia, is the contracting activity.