Envisioneering Inc.,* Alexandria, Virginia (N00173-19-D-2002); R&M Technology Solutions LLC,* Fredericksburg, Virginia (N00173-19-D-2003); Technology Service Corp.,* Arlington, Virginia (N00173-19-D-2005); Remcom Inc.,* State College, Pennsylvania (N00173-19-D-2004); and Cutlass Systems Engineering LLC,* Laurel, Maryland (N00173-19-D-2001), are awarded indefinite-delivery/indefinite-quantity, multiple award contracts for Modeling, Analysis, Research, and Simulation (MARS). The cumulative face value on this multiple award contract is a combined $48,400,000. This action does not include options. Work will be performed at the Naval Research Laboratory, Washington, District of Columbia (90 percent); and depending on each task order, one of the following contractor’s facility – A lexandria, Virginia; Fredericksburg, Virginia; Arlington, Virginia; State College, Pennsylvania; Laurel, Maryland (10 percent). This contract has a five-year ordering period and is expected to be completed Dec. 11, 2023. No funds will be obligated at the time of award. Funds will be obligated as task orders are issued. This contract is one of five contracts being competitively procured under a request for proposal #N00173-16-R-JH03 for which six proposals were received. The Naval Research Laboratory, Washington, District of Columbia, is the contracting activity. Work will be performed at the Naval Research Laboratory, Washington, District of Columbia (90 percent); and depending on each task order, one of the following contractor’s facility – A 10 percent). This contract has a five-year ordering period and is expected to be completed No funds will be obligated at the time of award. Funds will be obligated as task orders are issued.