According to the FY2019 Budget Request Overview report for the United States Department of the Air Force (DAF), the biggest allocation of the FY 2019 Request (61,407,391) was for the Operations and Maintenance service.
61,407,391 38,954,308 50,541,275 40,492,614 2,303,699 395,720 77,644 According to the FY2019_Budget_Request_Overview_Book | 8-12, the Department of Defense claims the Department of the Air Force is as follows Operation and Maintenance 
