Systems Planning and Analysis Inc., Alexandria, Virginia, was awarded an Indefinite-Delivery/Indefinite-Quantity contract (HDTRA1-23-D-0001) with a ceiling of $84,000,000 for advisory and assistance services for the Defense Threat Reduction Agency (DTRA) Strategic Integration Directorate (SI). The principal place of performance is Fort Belvoir, Virginia. Performance is expected to be completed by July 2028. The ordering period of the contract will commence at the date of award through 60 months thereafter (66 months if Federal Acquisition Regulation 52.217-8 Option to Extend Services is exercised). The ceiling is for the life of the contract. Funding will be obligated at the Task Order (TO) level. DTRA operations and maintenance funds in the amount of $416,870; $1,430,343; and $7,151,362, will be obligated to TO 1 for the SI, TO 2 for the Strategic Trends Division, and TO 3 for the SI’s Plans and Exercises Division respectively. These awards is the result of a competitive acquisition. SAM.gov was used to solicit proposals and six proposals were received. DTRA, Fort Belvoir, Virginia, is the contracting activity.