The DAA issues one of the following four accreditation determinations: Approval to Operate (ATO): It is an authorization of a DoD information system to process, store, or transmit information. Interim Approval to Operate (IATO): It is a temporary approval to operate based on an assessment of the implementation status of the assigned IA Controls. Interim Approval to Test (IATT): It is a temporary approval to conduct system testing based on an assessment of the implementation status of the assigned IA Controls. Denial of Approval to Operate (DATO): It is a determination that a DoD information system cannot operate because of an inadequate IA design or failure to implement assigned IA Controls. Answer: E is incorrect. No such type of accreditation determination exists.