The U.S. Department of Defense (DoD) is a federal executive department responsible for coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States Armed Forces. In the infrastructure industry, the DoD acts as a massive owner, developer, and operator of critical infrastructure globally, focusing on military readiness, energy resilience, and base modernization. Its strategy involves securing and maintaining its vast portfolio of facilities, investing in sustainable and resilient energy solutions, and leveraging public-private partnerships for infrastructure development and upgrades.