This is one of a series of systems engineering case studies prepared by the Air Force Center for Systems Engineering. This case study analyzes the Global Hawk Unmanned Aerial Vehicle (UAV). The Global Hawk is an advanced intelligence, surveillance, and reconnaissance air system composed of a high-altitude, long-endurance unmanned air vehicle (UAV) and a common ground segment (CGS) for command, control, and data collection. Its primary mission is to provide overt, continuous, long-endurance, all-weather, day/night, and near-real-time, wide-area reconnaissance and surveillance. The air vehicle is coupled with an integrated ground-based Mission Control Element (MCE) and Launch and Recovery Element (LRE) that monitors autonomous flight and facilitates-aided control of the air vehicle, when required. The Global Hawk system consists of the aircraft, payloads, data links, ground stations, and logistics support package. The ground stations have the ability to provide command and control (C2) of up to three vehicles and at least one air vehicle payload from a single ground station. The study provides a wealth of technical information about the aircraft and its complex history. The Department of Defense is exponentially increasing the acquisition of joint complex systems that deliver needed capabilities demanded by our warfighter. Systems engineering is the technical and technical management process that focuses explicitly on delivering and sustaining robust, high-quality, affordable solutions. The Air Force leadership has collectively stated the need to mature a sound systems engineering process throughout the Air Force. Gaining an understanding of the past and distilling learning principles that are then shared with others through our formal education and practitioner support are critical to achieving continuous improvement. These cases support academic instruction on SE within military service academies, civilian and military graduate schools, industry continuing education