The combined capabilities and performance of U.S. weapon systems are unmatched throughout the world, ensuring that U.S. military forces have the advantage over any adversary. The Fiscal Year (FY) 2015 acquisition funding request for the Department of Defense (DoD) totals $153.9 billion, which includes $154.2 billion in new budget authority for FY 2015 offset by the cancellation of $0.3 billion of prior year funding. The $154.2 billion for the base budget, includes $90.7 billion for Procurement funded and $63.5 billion for Research, Development, Test, and Evaluation (RDT&E) funded programs. Of this amount, $69.6 billion is for programs that have been designated as Major Defense Acquisition Programs (MDAPs). Unless specifically identified as being for Overseas Contingency Operations (OCO), this book focuses on base funding for the key MDAP programs. To simplify the display of the various weapon systems, this book is organized by the following mission area categories: Mission Area Categories Aircraft & Related Systems Command, Control, Communications, Computers, and Intelligence (C4I) Systems Ground Systems Missile Defense Programs Missiles and Munitions Shipbuilding and Maritime Systems Space Based Systems Mission Support Activities RDT&E Science & Technology"