SAN DIEGO - Northrop Grumman’s RQ-4 Global Hawk unmanned aircraft system recently reached the milestone of 25,000 combat hours during a sortie in July from a deployed location. It was first flown in 1998 and has logged 1,229 missions, many of them non-combat. It can reach more than 60,000 feet in altitude for more than 32 hours. (Source: Northrop Grumman via Globe Newswire, 08/05/09) Gulf Coast note: Global Hawk central fuselage work is done in Moss Point, Miss.