Chimes District of Columbia Inc., Baltimore, Maryland, was awarded a $12,031,658 firm-fixed-price for base custodial services. This contract provides for custodial services to maintain base facilities. Work will be performed at Dover Air Force Base, Delaware, and is expected to be completed by March 31, 2030. This contract was a sole source acquisition. Fiscal 2025 operation and maintenance funds in the amount of $1,657,524 are being obligated at the time of the award. The 436th Contracting Squadron, Dover AFB, Delaware, is the contracting activity (FA4497-25-C-0011).