This is a firm fixed-price contract awarded by the National Aeronautics and Space Administration (NASA) Marshall Space Flight Center to Maxar Space LLC, a division of Maxar Technologies Inc., for the Human Landing System (HLS) Refueling Element. The contract requires Maxar to refine the architecture, functional allocation options, and common interfaces required to enable the HLS to provide human landing capability; inform overall HLS requirements; provide understanding of element designs, schedules, and costs; identify key element technology maturation areas; and implement descent technology maturation plans. The contract has a potential value of $1,943,098.00 and was awarded on May 30, 2019, with a completion date of February 28, 2020. No set-aside designation was used for this contract.