The TacMed™ ARK™ provides individuals responding to active shooter situations with the equipment necessary to render aid and initiate evacuation of multiple casualties. It is also designed to provide the necessary equipment for aid and litter teams, combat lifesavers, and medical operators to treat and evacuate a casualty in one compact package. The modular design of the bag allows the user to modify the layout to meet mission specific requirements. Responders are able to maximize the resources available on scene without hindering or slowing down the assault or clearing process of the structure or incident area.