Site problems Defense Acquisition System (DAS) The DAS is:  “the management process by which the DoD provides effective, affordable, and timely systems to the users, [and it] exists to manage the nation’s investments in technologies, programs, and product support necessary to achieve the National Security Strategy and support the United States Armed Forces” (DoDD 5000.1. The Defense Acquisition System, May 12, 2003.) Each acquisition program is managed by an acquisition Program Office. The Program Office is headed by a Program Manager (PM). PMs can be military officers or federal civil servants. They are usually supported by a staff that can include engineers, logisticians, contracting officers and specialists, budget and financial managers, and Test and Evaluation (T&E) personnel. PMs usually report to a Program Executive Officer (PEO). PEOs can have many PMs who report to them. PEOs can also be military officers or federal civil servants. They report to a Component Acquisition Executive (CAE). Most CAEs report to the Under Secretary of Defense for Acquisition, Technology and Logistics (USD (AT&L)), who also serves as the Defense Acquisition Executive (DAE). The rules governing the “Acquisition” process are set forth in DoD Instruction 5000.02, Operation of the Defense Acquisition System. The DAS uses “Milestones” to oversee and manage the acquisition programs. Each milestone has specific requirements. A program must meet the specific statutory regulatory requirements of a milestone in order to proceed to the next phase of the acquisition process. The Milestone Decision Authority (MDA) is responsible for deciding whether a program meets the milestone criteria and may proceed to the next phase of the acquisition process. The reporting chain between the program manager and the MDA should be no morethan two levels of management for all acquisition programs. A table showingACATs and their corresponding MDAs is found in Enclosure 3 of DoD Instruction 5000.02