Unmanned Aerial Vehicles: DOD's Acquisition Efforts, Statement of Louis J. Rodrigues, Director, Defense Acquisitions Issues, National Security and International Affairs Division, Testimony Before the Subcommittees on Military Research and Development and Military Procurement, Committee on National Security, House of Representatives [open pdf - 45KB]
"According to DOD [Department of Defense], its objective in acquiring UAVs [Unmanned Aerial Vehicle] is to provide unmanned systems that will complement its mix of manned and national reconnaissance assets. However, its UAV acquisition efforts to date have been disappointing. Since Aquila began in 1979, of eight UAV programs, three have been terminated (Aquila, Hunter, Medium Range), three remain in development (Outrider, Global Hawk, DarkStar), and one is now transitioning to low rate production (Predator). Only one of the eight, Pioneer, has been fielded as an operational system. We estimate DOD has spent more than $2 billion for development and/or procurement on these eight UAV programs over the past 18 years."
Government Accountability Office: http://www.gao.gov/