The Department of Energy's Office of Science High Energy Physics (HEP) program strives to understand the universe at a more basic level by investigating the elementary particles that are the fundamental constituents of matter and the forces between them, thereby underpinning and advancing DOE missions and objectives through the development of key cutting-edge technologies and trained manpower that provide unique support to these missions. This program will provide world-class, peer-reviewed research results in high energy physics and related fields, including particle astrophysics and cosmology, executing a long-range strategy for high energy physics research and technology.