The Pentagon is developing several types of what the military calls UAVs - unmanned aerial vehicles. Other than the Predator, the one furthest along in development is the Global Hawk, a high-altitude spy plane.

Bush's budget seeks to build three more Global Hawks next year. Military commanders already have used Global Hawk prototypes over Afghanistan. One of them crashed, which the military blamed on a maintenance problem.

Yahoo!

-- Anonymous, February 05, 2002