Four Tribes Enterprises LLC, Gaithersburg, Maryland, has been awarded a $7,840,230 firm-fixed-price contract to repair heating, ventilation, and air conditioning and fire protection equipment shelter. Work will be performed at Davis-Monthan Air Force Base, Arizona, and is expected to be completed June 2022. This award is the result of a sole-source acquisition. Fiscal 2021 other procurement funds in the full amount are being obligated at the time of award. The 355th Contracting Squadron, Davis-Monthan AFB, Arizona, is the contracting activity (FA4877-21C-0021).