This document is a response to an email sent on July 9, 2004 by Stephen McCraw to individuals who conducted an assignment at Guantanamo Bay requesting information concerning the treatment of detainees. This is a Response by the FBI's Investigative Technology/Electronic Surveillance Technology Section. The document indicates that contractor personnel installed, administered, and maintained systems at Guantanamo. It includes a redacted list of these personnel and their dates of service. It reports that these individuals had no personnel contact with detainees and that none of them observed any aggressive treatment of detainees.