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C. J. Winckler serves as the deputy medical director for the San Antonio Fire Department, and medical director for North Channel EMS and Wilson County ESD 3. He is also the Texas Emergency Medical Task Force Regin 8 medical director. Dr. Winckler is an associate professor at the University of Texas San Antonio Health Science Center and Texas A&M College Station School of Medicine. He is the President of TX NAEMSP, Chair of GETAC EMS Medical Director’s Committee, and Vice Chair of GETAC Prehospital Whole Blood Task Force. Dr. Winckler provides daily clinical supervision, via on-scene medical direction, online medical direction, and performance improvement processes to over 2,000 EMS providers. In San Antonio he has developed telemedicine CPR for dispatch, an ECMO prehospital CPR Alert system, and the world’s first prehospital whole blood program to serve an entire metropolitan system.