Augmented reality simulation enables users to have realistic experiences without endangering anyone. It also prepares team members to make critical decisions on the spot. One example is the patient simulator PerSim by MedCognition. Personnel use Microsoft HoloLens for more realistic training in responding to seizures, respiratory distress, and trauma-related injuries during emergency situations. Instructors can program the changes that the model will exhibit to check the trainees' speed and accuracy when responding to visual cues.