Ground Radar and Guided Munitions: Increased Oversight and Cooperation Can Help Avoid Duplication among the Services' Programs, Report to Congressional Committees [open pdf - 2MB]
From the Highlights: "Over the past five years, GAO [Government Accountability Office] has found potential overlap or duplication in DOD weapon system investments. Overlap occurs when multiple agencies or programs are engaged in similar activities. Duplication occurs when two or more agencies or programs are engaged in the same activities. Senate Report 113-44 accompanying the fiscal year 2014 National Defense Authorization Act mandated that GAO examine the military services' ground radar and air-to-ground precision guided munitions programs for potential duplication. Ground radars are sensors used to detect and track targets, and precision guided munitions are weapons intended to accurately engage and destroy enemy targets. This report examines the extent to which potential overlap or duplication exists across the military services' (1) ground radar and (2) air-to-ground precision guided munitions programs. GAO analyzed program documentation on system performance requirements and capabilities and interviewed DOD officials about potential duplication."
Government Accountability Office: http://www.gao.gov/