This opportunity is for a firm-fixed-price delivery order to procure brand-name Siemens Simcenter STAR-CCM+ software license renewals through the Army CHESS IT MART, competed among CHESS-authorized resellers. Quotes must be all-inclusive of listed items, shipping, and fees, and must meet every specification; no other brands or substitutions are allowed. Award will be based on fulfillment of specifications, lowest price technically acceptable, and best value, with the contract awarded without discussions. Offerors must be registered on CHESS and submit quotes via CHESS IT MART. The government reserves the right to increase quantities under FAR 52.217-6.