RQ-4 HALE ENTERPRISE. The world's preeminent high-altitude, long-endurance unmanned airborne intelligence, surveillance, and reconnaissance system is the basis for the RQ-4 Global Hawk. Able to provide unprecedented real-time situational awareness for decision makers in operations around the world, it covers vast geographic areas, flying at 60,000 feet for over 30 hours, while carrying advanced sensors. The RQ-4 provides the capability necessary to gather information critical for responding to natural disasters or to keep coalition troops safe while they keep us safe.