WesTest Engineering Corp., Layton, Utah (FA8126-23-D-0001, contract maximum amount $24,100,000); ION Corp., Eden Prairie, Minnesota (FA8126-23-D-0005, contract maximum amount $37,500,000); Total Quality Systems Inc., Roy, Utah (FA8126-23-D-0003, contract maximum amount $43,400,000); and X Technologies Inc., San Antonio, Texas (FA8126-23-D-0004, contract maximum amount $43,900,000), have been awarded a firm-fixed-price, multiple award, indefinite-delivery/indefinite-quantity contract for interface test adapter and related test equipment design and manufacturing services. This contract provides for all supervision, personnel, equipment, tools, materials, transportation, and other items as necessary, except for GFP applicable for design and manufacture of interface test adapters and related test equipment design and manufacturing for Air Force Government Test Program Set development. Work will be performed at each vendors location and is expected to be completed by April 2, 2028. These awards are the result of a competitive acquisition and 10 offers were received. Fiscal 2023 working capital funds in the amount of $26,601 are being obligated at time of award. The Air Force Sustainment Center, Tinker Air Force Base, Oklahoma, is the contracting activity.