Kevin Ryan, former Site Manager for Environmental Health Laboratories, a division of Underwriters Laboratories (UL). Mr. Ryan, a Chemist and laboratory manager, was fired by UL in 2004 for publicly questioning the report being drafted by the National Institute of Standards and Technology (NIST) on their World Trade Center investigation. In the intervening period, Ryan has completed additional research while his original questions, which have become increasingly important over time, remain unanswered by UL or NIST.

Natalie Jackson is one of the super lawyers who work for Trayvon Martin's family.  She comments on the fatal shooting of Trayvon Martin by George Zimmerman that took place on the night of February 26, 2012, in Sanford, Florida, United States. Martin was an unarmed 17-year-old African American. George Zimmerman, a 28-year-old multi-racial Hispanic American, was the appointed neighborhood watch coordinator for the gated community where Martin was temporarily staying and where the shooting took place.

Nationwide audience participation during the show.