A software glitch caused a Global Hawk unmanned aerial vehicle to accelerate and veer off the main runway following a test flight over Edwards AFB, CA, last December, an Air Force accident investigation board has concluded. The UAV landed and came to a full stop when it suddenly accelerated to an "excessive taxi speed" and veered off the primary runway, collapsing its nose gear and damaging its sensor suite, the Air Force said yesterday in a statement announcing the release...
