Since fiscal year 2005, DHS has been required by federal law to issue annual reports identifying estimated expenditures and proposed appropriations for, among other things, major acquisition programs for the current budget year and the four succeeding fiscal years. Among other things, these reports identify how the department's major acquisition programs' multiyear funding plans change from year to year. DHS leverages two management systems to develop these funding plans: (1) the resource allocation system and (2) the acquisition management system.