"Mark Klein worked for 22 years as a telecommunications technician at AT&T. He is a graduate of Cornell University and holds numerous technical certificates in electronics and computers. Since becoming a whistleblower, Klein has been interviewed on /ABC Nightline/ with Brian Ross, /PBS Frontline/ with Hedrick Smith, /MSNBC Countdown/ with Keith Olbermann, /NPR All Things Considered/ with Robert Siegel, and /Democracy Now!/ with Amy Goodman."