Mobile in situ simulator training is a way to bring the training to participants' workplaces as opposed to bring participants into simulator centers. Thus, the simulator training comes closer to the clinical arena. The idea is to provide training exactly in the location where people normally work (“training where you work” concept), using most of their original equipment used in routine work (in situ training). This setting also allows for training of complete teams where team members work together on a regular basis (the “training together–working together” concept). Simulator training is focused on Crisis Resource Management (CRM). Crisis Resource Management is most relevant to patient safety and among the most beneficial uses of simulation as it uniquely addresses attitudes, as well as knowledge and nontechnical skills of the participants. Questioning, changing, and even reinforcing attitudes needs insight, tact, and encouragement. Adults cannot be requested to change, but will only change if they think it to be beneficial to their interests. In order to use these benefits of the CRM-type courses, the live video transmission of the action to observing participants followed by video-assisted debriefings are essential. Live observation amplifies the potential for learning to a larger number than can be accommodated within any one event. Live observation by those expected to perform the scenario soon afterward enhances their self-reflective thinking and offers brand-new insights similar to that of video debriefing with those who just completed the scenario. Debriefing is important in a simulator course to ensure self-reflected learning.