It Went, It Conquered, It Came Home: 
The prototype Global Hawk unmanned aerial vehicle, designated Air Vehicle No. 3, first sent to Southwest Asia in 2002 should arrive back at Edwards AFB, Calif., on Feb. 20. The Air Force has operated the prototype in the global war on terror for more than four years, during which time it amassed 4, 245 combat flying hours. It has been replaced by production model Global Hawks.
Today’s armament maintainers are tasked with performing flightline (O-Level) maintenance with an assortment of legacy test sets that greatly limit the ability to quickly and efficiently verify armament system readiness, diagnose failures, and ultimately return the aircraft to full mission...