Systems, methods and devices for trauma assessment and tourniquet, cricoids cartilage and tension pneumothorax training including use of modular arms, legs and torso parts, that each include self-contained simulators having realistic symptoms of bleeding, pulse rates, smells and the like so that students can be trained to both assess patient trauma and train students to control bleeding through tourniquets. Also the use of digital communication devices for presenting educational content and controlling the operations of the modular system parts for training purposes. Devices and methods of teaching cricothyrotomy techniques through reusable neck collars having segmented fluid filled chambers, adjustable trachea tools with moveable parts, as well as enhanced teaching and recording the teaching results from multiple students.