Subjects randomized to the study group will receive basic life support (BLS) level care. This means that pre-hospital procedures such as endotracheal intubation and intravenous fluid administration will not be carried out. However, passive oxygen and needle thoracostomy, if required for tension pneumothorax, will be permitted if medically necessary. For patients in the control group, ALS responders will perform advanced life support current practice, including intravenous fluid administration and endotracheal intubation as deemed appropriate.