Plot: * Aurora Shooting Witness Omar Esparza Describes Watching Massacre Unfold & Narrowly Escaping Theater * Are We Going to Wait for Another Massacre? Rep. Carolyn McCarthy Urges Stricter Gun Control Measures * Virginia Tech Shooting Survivor Colin Goddard: "The Time Is Now" for Action on Gun Control Laws * Bud Welch, Father of Oklahoma City Victim, on Rejecting the Death Penalty & Healing After a Tragedy