Dr. Cheng (COMP 1990) is a board-certified family physician practicing in Newport Beach, California. He authored “How to Prepare for and Survive the Violent Patient Encounter” at the request of Family Practice management (FPM), a national peer-reviewed journal of the American Academy of Family Physicians. Publication of this article is in the November/December issue.Additionally, he has lectured on the topic of Active Shooter in a Medical Setting to the Orange County Chapter of the California Academy of Family Physicians. Dr. Cheng’s qualifications to write and speak on this topic include being a 12-year member of the Orange County Sheriff’s Department, where he is a volunteer reserve deputy sheriff. Having attended the Sheriff’s Training Academy for Law Enforcement, SWAT School, and Tactical Medicine School, he is currently a SWAT officer and Tactical Physician. He has been involved in hundreds of high-risk encounters and training scenarios, including active shooter, barricaded suspects, felony high-risk arrest, and search warrants situations. He is also currently a SWAT School instructor and Critical Incident Response Training instructor, having taught over 100 California law enforcement officers on tactical medicine. Lastly, he and his office were involved in a lock-down when a disgruntled patient shot and killed a surgical colleague in the same medical complex.