Under the FACA, the High Energy Physics Advisory Panel meets in public, and subpanels are appointed to meet and deliberate in private. In high-energy physics, peer review groups of scientists, knowledgeable in their fields, are asked to sit on these subpanels, and to make recommendations about future high energy physics projects. HEPAP either accepts or rejects panels’ recommendations, and the Department of Energy decides which projects to support in turn.