RQ-4 Block 20 Global Hawk
- Northrop Grumman data sheet with photo gallery.
- http://www.is.northropgrumman.com/systems/ghrq4b.html

RQ-4A Block 10 Global Hawk
- Northrop Grumman data sheet with photo gallery.
- http://www.is.northropgrumman.com/systems/ghrq4a.html

Unmanned Aircraft Flying In U.S. National Airspace
- News article about use of the Global Hawk aircraft in the U.S.
- http://feeds.bignewsnetwork.com/?sid=e42b72c8c4e8dee4

Washington Sharpens Eyes With Global Hawk Deployment
- Article on how the US military stepped up its surveillance in the skies over Afghanistan with the deployment of its latest pilotless spy plane, the Global Hawk.
- http://www.spacedaily.com/news/uav-01m.html

Global Hawk Clocks Up 1,000 Flight Hours
- Article noting that the Northrop Grumman UAV has clocked up more than 1,000 flight hours while taking part in joint US-Australian wargames off eastern Australia.
- http://www.spacedaily.com/news/uav-01f.html

Air Force Technology - Global Hawk High Endurance Unmanned Reconnaissance Aircraft
- News and project information on the RQ-4A. Includes photographs.
- http://www.airforce-technology.com/projects/global/

Sway-backed Warrior
- Article, with photos, describes the vehicle and its mission.
- http://www.af.mil/news/airman/1101/hawk.html

Federation of American Scientists: Global Hawk
- Description and photographs of the RQ-4A Global Hawk, which is a high-altitude endurance remotely piloted aircraft.
- http://www.fas.org/irp/program/collect/global_hawk.htm