Lafayette Group Inc., Vienna, Virginia (N66001-21-D-0096); and Science Applications International Corp., Reston, Virginia (N66001-21-D-0097), were awarded a combined $51,828,272 indefinite-delivery/indefinite-quantity, multiple award contract with cost-plus-fixed-fee and cost-with-no-fee pricing to provide communications interoperability technical assistance, programmatic and strategic support, software lifecycle engineering and upgrades, and other command, control, communications, computers, and intelligence (C4I) efforts. This two-year contract includes two three-year option periods which, if exercised, would bring the overall potential value of this contract to an estimated $220,218,046. Work will be performed in San Diego, California (20%); and Washington, D.C. (80%). The period of performance of the base award is from April 1, 2021, through March 31, 2023. If all options are exercised, the period of performance would extend through March 31, 2029. Awardees will have the opportunity to compete for task orders during the ordering period. No funds will be obligated at the time of award. Fiscal 2021 funds will be obligated as task orders are issued using Department of Homeland Security (DHS) operations and sustainment funds; and DHS procurement, construction and improvements funds. This contract was competitively procured via a request for proposal (N66001-21-R-0015) published on the beta.SAM.gov web site and the Naval Information Warfare Systems Command e-Commerce Central web site. Four offers were received and two were selected for award. Naval Information Warfare Center Pacific, San Diego, California, is the contracting activity. (Awarded March 31, 2021)