Northrop Grumman RQ-4 Global Hawk
The Global Hawk air vehicle is able to provide high resolution Synthetic Aperture Radar (SAR)—that can penetrate cloud-cover and sandstorms—and Electro-Optical/Infrared (EO/IR) imagery at long range with long loiter times over target areas. It can survey as much as 40,000 square miles (100,000 square kilometers) of terrain a day.
The Global Hawk costs about $35 million USD (actual per-aircraft costs; with development costs also included, the per-aircraft cost rises to $123.2 million USD each).
more pictures from the Singapore Airshow 2010
http://www.elakiri.com/forum/showthread.php?t=442674