The Defense Health Agency is responsible for the day-to-day running of the entire military healthcare system. All of the management and oversight for how healthcare is delivered, the standards for quality, access, and delivery, the alignment of personnel and functions, the budget, research, logistics, and administrative support are all centralized under the DHA. The following chapter will go into detail about where these functions lie within the headquarters, source documents to find key initiatives, and an overview of how staffing will match the functions of the hospital you will be working in.