A fancy new miniaturized plasma propulsion system being developed at Oklahoma State University promises some exciting new Unmanned Ariel Vehicle spy plane designs for the folks at DARPA . The engine is about the size of a cigarette, contains no moving parts, and will be build into planes as small as 6-inches long, which soldiers can carry in packs of six or so and deploy as a swarm of inquisitive Daniel Craigs. The planes should be able to manage indoors and urban areas. No word on when these will be spying on a homeland security threat near you, but the project is still in the early stages.[Via Crave