Booz Allen Hamilton Inc., McLean, Virginia (HR0011-18-D-0001); Centra Technology Inc., Arlington, Virginia (HR0011-18-D-0002); Avantus Federal/E3 Federal Solutions LLC, McLean, Virginia (HR0011-18-D-0003); ECS Federal, Fairfax, Virginia (HR0011-18-D-0004); ManTech SRS Technologies Inc., Herndon, Virginia (HR0011-18-D-0005); Schafer Corp., Arlington, Virginia (HR0011-18-D-0006); and Strategic Analysis Inc., Arlington, Virginia (HR0011-18-D-0007), were awarded modifications with a combined $183,000,000 ceiling increase for technical and analytical support services. The modifications with cost-reimbursable, fixed-price and labor-hour task orders provide a range of high-level advisory and assistance services to all Defense Advanced Research Projects Agency technical and support offices, and increase the multiple award contract from $850,000,000 to a maximum amount of $1,033,000,000. Work will be performed in Arlington, Virginia, with an expected completion date of August 2023. Task orders can extend the contract an additional five years until August 2028. No funds are being obligated at time of award. The Defense Advanced Research Projects Agency, Arlington, Virginia, is the contracting activity for each contract.