The RQ-4, which informed the development of the newer MQ-4C drones, is one of the most advanced high-altitude drones being employed operationally. These aircraft, Northrop Grumman aircraft that have been used extensively in the Persian Gulf, rely on a suite of high-end electronic sensors and other intelligence-gathering systems to peer into other countries.
The aircraft, which is used by both the US Air Force and the US Navy, has a price tag higher than the US military’s new F-35 stealth fighters. A Global Hawk has a unit cost of roughly $123 million, while an F-35A Lightning II Joint Strike Fighter costs only $89 million.
Source: http://bit.ly/2WZMumn
