The FBI has released images of a person of interest in the Charlie Kirk shooting, offering a $100,000 reward for information. The killer is still at-large  Authorities say the shooter fired from a central building that houses the university's welcome center. Part of that building is just over 100 meters from the location where Charlie Kirk was speaking to an estimated crowd around 3,000.  A live stream of the video, with high-quality audio, captures the assassination. Many in the crowd duck, scream, and start to panic in the moments after the single shot is fired. Police say a high-powered rifle has been found in nearby woods, as well as a "footwear impression... and a forearm imprint."  Joining Nancy Grace today: Greg Morse - Criminal Defense Attorney of Morse Legal, author of “The Untested” found on Amazon; website: morselegal.com  Dr. Chloe Carmichael - Clinical Psychologist, Author of “Can I Say That? Why Free Speech Matters and How to Use it Fearlessly” website: www.FreeSpeechToday.com,  Twitter: DrChloe  Dan Murphy - Former NYPD Detective-Sergeant, Joint Terrorism Task Force, Former Chief Security Officer, US Bancorp, Co-Host of "Gold Shields" Podcast, Author: “Workplace Safety: Establishing an Effective Violence Prevention Program”  Koa Lorimor - Former Army Sniper   Katherine Schweit - Creator of the FBI’s Active Shooter Program, Former Chicago prosecutor and career GBI special agent, Author of “Stop the Killing; How to End the Mass Shooting Crisis” and “How to Talk About Guns to Anyone.”, Host of podcast “Stop the Killing”, website: katherineschweit.com Dr. Kendall Crowns - Chief Medical Examiner Tarrant County (Ft Worth), Host of NEW Podcast "Mayhem in the Morgue”, Lecturer: Burnett School of Medicine at TCU (Texas Christian University)   Dave Mack - Crime Stories Investigative Reporter   See omnystudio.com/listener for privacy information.