Aldrich a valuable employee.

[Matthew X]

http://rf-web.tamu.edu/files/SECGUIDE/Spystory/Ames.htm#Aldrich Ames

References
1. This account is based entirely on unclassified sources, principally the 
Unclassified Abstract of the CIA Inspector General's Report on the Aldrich 
H. Ames Case and the U.S. Senate Select Committee on Intelligence report, 
dated November 1, 1994, An Assessment of the Aldrich H. Ames Espionage Case 
and Its Implications for U.S. Intelligence. The CIA Inspector General's 
report is available on the Internet at 
http://nsi.org/Library/Espionage/Hitzreport.html.