In this episode of the *Big Ideas for Smaller Government* series, host David Fran sits down with Jeremiah Mosteller, policy director for Americans for Prosperity, to explore the vast and complex Department of Defense (DoD). With a staggering $2 trillion budget and nearly three million military and civilian personnel, the DoD is one of the largest federal agencies. Together, they discuss the department’s history, structure, and some surprising examples of wasteful spending, including $5 million spent on ineffective camouflage and $1,300 coffee cups used on Air Force cargo planes. Jeremiah highlights how better coordination and cutting excessive contracting could lead to significant taxpayer savings—up to $260 billion over ten years—without compromising national security.