The United States Department of Defense (DoD) budget for Fiscal Year (FY) 2014 requests $526.6 billion to protect and advance security interests at home and abroad during the coming fiscal year and into the future. This budget reflects the difficult choices involved with protecting America's security interests and role as a global power at a time of declining budgets and ongoing fiscal uncertainty about the future. This request balances the competing and compelling demands of supporting troops still engaged in Afghanistan, protecting readiness, modernizing the military's aging weapons inventory, and sustaining the quality and care of the all-volunteer force - all while implementing and deepening our alignment to the Defense Strategic Guidance signed by the President last year. This book highlights the Department's ongoing efforts to achieve an agile and ready force while maintaining the right capabilities and capacity to rapidly deal with contingencies across the globe.