The Grob G-520 Strato (Egret), was originally intended as a cheap alternative to the U-2. Of the six built, one flies for Australia, while four remain in service in the US, utilized by agencies like the CIA and DEA as platforms for ELINT and high-altitude radio relay, as well as atmospheric sciences.
http://www.spyflight.co.uk/grob%20new.htm
http://www.airliners.net/open.file/1192736/M/
http://www.airliners.net/open.file/0097909/M/
Airplanes - Civilian - Parked - Large jets, Airplanes - Classic Aircraft
By: Pdunn