Rocky - just found interesting NASA/UAV article dated Feb 2005. Might have been posted already, but incase it has not here it is. <A HREF="http://gltrs.grc.nasa.gov/reports/2005/TM-2005-213427.pdf" target="_blank">http://gltrs.grc.nasa.gov/reports/2005/TM-2005-213427.pdf</A> Kevin