Ms. McMahon serves as a senior instructor and curriculum developer for Crisis Hostage Negotiation and Peer Support Programs for Crisis Systems Management, LLC. Ms. McMahon retired as a Special Agent of the U.S. Army Criminal Investigation Division. Prior to her retirement, Ms. McMahon was an instructor assigned to Operations and Investigations Division, Advanced Law Enforcement Training, U. S. Army Military Police School, Fort Leonard Wood, MO. Ms. McMahon instructed advanced law enforcement subjects to criminal investigators who were assigned to municipal, state, and federal law enforcement agencies from throughout the world. In addition to her instructional duties, Ms. McMahon developed specialized advanced law enforcement training programs. During her twenty-one years of law enforcement experience, Ms. McMahon has performed such diverse duties as patrol, traffic accident investigation, desk sergeant, covert drug investigator, criminal investigator, protective services agent, and crime scene and evidence technician. She has also served as a senior criminalistics advisor, evidence program manager, and in a variety of positions on Crisis Response Teams. Ms. McMahon served in supervisory capacities as Task Force Commander, Drug Suppression Team Chief, and as Operations NCO to a seventy-person protective service security element for the 50th Anniversary NATO Summit. Operational assignments have taken Ms. McMahon throughout the United States, Europe and the Middle East. Some of Ms. McMahon's technical education and training include numerous Crisis and Hostage Negotiations courses, Countering Terrorism, Traffic Accident Investigation, Advanced Fraud Investigation, Protective Services, Child Abuse Prevention/Investigative Techniques, numerous advanced interview courses, gang training courses, and several Drug Enforcement Administration training courses. In addition to her technical training, Ms. McMahon has also attended more than twenty-six weeks of advanced leadership development and management training. Ms. McMahon has earned Bachelor of Science degrees in both Criminal Justice and Psychology. In a variety of environments, Ms. McMahon has served as a member of a crisis response team and has negotiated numerous hostage, barricaded subjects and potential suicide incidents. In addition to her practical experience, Ms. McMahon has authored Crisis Response Plans, has planned, executed and supervised major crisis response training events, and has published numerous professional articles on a variety of law enforcement topics, including crisis negotiation and crisis negotiation training. Ms. McMahon is currently the Training Director for the Missouri Association of Crisis Negotiators. Ms. McMahon has Bachelor of Science Degrees in Criminal Justice and Psychology from Drury University.

In 2001, Karin was selected for the San Diego FBI Crisis Negotiation Team. She also served on the Joint FBI-San Diego Police Department-Naval Criminal Investigative Service Crisis Negotiation Team, as well as the Joint FBI-San Diego Sheriff's Office Crisis Negotiation Team. From 2007 to 2010, Karin served at FBI Headquarters in Washington, D.C. in the Weapons of Mass Destruction Directorate, National Preparedness Unit, and later, in the FBI Cyber Division, Intellectual Property Rights Unit. In July 2010, she transferred to the FBI Kansas City Division where she was assigned to the Domestic Terrorism/Weapons of Mass Destruction Squad on the Joint Terrorism Task Force. Throughout her assignments, Karin continued to serve as a member of the FBI Crisis Negotiation Team, and in 2013, assumed the role of Crisis Negotiation Coordinator for the FBI Kansas City Division. She completed hundreds of hours of negotiations training, including the 80-hour FBI National Crisis Negotiation Course and the 80-hour London Metropolitan Police Services National Hostage and Crisis Negotiation Course. Karin deployed on hundreds of SWAT Operations, barricaded subjects, hostage situations, suicidal individuals, kidnappings, and special events. She is a member of the Missouri Association of Crisis Negotiators and the Kansas Association of Hostage Negotiators. Karin holds a Bachelor of Science degree in Human Resource Development from Grand Canyon University and a Master of Science degree in Higher and Adult Education from Arizona State University. She was an FBI Adjunct Faculty Member with certifications in Negotiations, Presentation Skills, and Weapons of Mass Destruction. Karin currently serves as a Senior Instructor and Professional Development Coordinator for CSM as well as the President of the Missouri Association of Crisis Negotiators.