HERF, EMP, Tempest

The Complete, Unofficial TEMPEST Info Page
Offers TEMPEST information.
http://www.eskimo.com/~joelm/tempest.html

EMP and TEMPEST Protection for Facilities
U.S. Army Corps of Engineers specifications for protecting buildings.
http://cryptome.org/emp.htm

EMP Weapons
Information on the history and development of EMP weaponry, including HERF guns.
http://www.eskimo.com/~bilb/freenrg/empweap.html