You are an administrative contracting officer (ACO) at DCMA Terminus, Georgia with full delegation of all administrative functions for a facilities cost-reimbursement contract. This contract was awarded based on an estimated cost of $25M. Based on the Contract Data Requirements List that you have received this month, it appears the contractor is underrunning this estimated cost. Under FAR 42.302, is the ACO required to ensure the contractor provides timely notification of the underrun?