We will be performing a quality control review on the single audit of the Institute for Defense Analyses’ fiscal year ended September 27, 2019, under Project No. D2020-DEV0SO0180.000. The single audit is required by Title 2 Code of Federal Regulations part 200, “Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards” (Uniform Guidance). The objective of our review is to determine whether the audit work was performed in accordance with Federal requirements and applicable auditing standards.