The Department of the Interior, through its Interior Business Center (IBC) Acquisition Services Directorate (AQD), is initiating the closeout of contracts that have reached the end of their performance period and have a remaining balance of zero dollars. This action is in accordance with FAR 4.804 and serves as a notification to the vendors listed in the attached contract list, which includes various contractors providing a range of services from health and research to aviation support. The unilateral contract closeout process will commence ten business days following the announcement, and vendors wishing to request a bilateral closeout modification or present valid reasons against the closeout must contact John Scarsellone at john_scarsellone@ibc.doi.gov before the closing date.