Sierra Nevada Corp., Centennial, Colorado, has been awarded a $23,917,275 indefinite-delivery/indefinite-quantity, firm-fixed-price contract for the Tactical Systems Emulator (TSE) development and sustainment via sole-source direct award. This contract provides for continued development of the TSE for tactical systems operator airborne signals intelligence terminal guidance training, funds new development for direct support operator training, upgrades delivered TSE classrooms, adds a mobile TSE capability, and provides sustainment to delivered systems and software for the duration of the contract period. Work will be performed in Centennial, Colorado, and is expected to be completed by Dec. 31, 2022. This award is the result of a sole-source acquisition. Fiscal 2019 operations and maintenance funds in the amount of $2,826,050 are being obligated at the time of award. Acquisition Management and Integration Center, Joint Base San Antonio – Lackland, Texas, is the contracting activity (FA7037-19-D- A001).