Department of Homeland Security 'National Protection and Programs Directorate' Budget Overview (Fiscal Year 2019 Congressional Justification) [open pdf - 4MB]
From the Component Overview: "The strategic context presents the performance budget by tying together strategy, budget resource requests, programs, or PPAs [programs, projects and activities], and performance measures that gauge the delivery of results to our stakeholders. The Common Appropriation Structure (CAS) allows DHS to integrate the strategic programmatic view with our budget view of resources. With this structure, a significant portion of the Level 1 PPAs represent what DHS refers to as our mission programs. A mission program is a group of activities acting together to accomplish a specific high-level outcome external to DHS and include operational processes, skills, technology, human capital, and other resources."
U.S. Department of Homeland Security: https://www.dhs.gov/