The low-altitude, long-endurance KillerBee unmanned air vehicle is being developed by Northrop Grumman and its principal teammate Swift Engineering. It's primairy mission will be intelligence gathering (ISR), but it can also be used to relay voice and data across great distances.
The KillerBee is being developed to meet a broad range of needs in the needs of the US Air Force, Marine Corps., Navy and the Department of Homeland Security. Relatively cheap in purchase and operational costs, the UAV can also be used by private security companies.