Thanks to JM's pointers we offer three related May 1998 USAF docs on emissions security: AFI 33-203 - Emissisions Security http://jya.com/afi33-203.htm (61K) AFSSI 7010 - Emission Security Assessments http://jya.com/afssi-7010.htm (110K) AFSSM 7011 - Emission Security Countermeasures Reviews http://jya.com/afssm-7011.htm (515K) Or, a zipped package of the three: http://jya.com/afemsec.zip (146K) While there's a fair amount in the last two docs about security for classified NONSTOP and HIJACK systems, we'd welcome more detail to fill in the deleted parts.