The audit found the agency had significant issues implementing the Coronavirus Aid, Relief, and Economic Security (CARES) Act. The agency did not sufficiently review CARES invoices due to changing guidelines, reduced contract oversight staffing during the pandemic, overreliance on contractor-provided information, and the lack of clear and comprehensive Contracting Officer Representative (COR) oversight procedures for CARES invoices. As a result, the OIG questioned more than $16.4 million, or 40 percent of the sampled CARES invoice charges. As of June 8, 2021, NSA reported $917 million in CARES invoices.