During medical emergencies, EMT and rescue supplies provide first responders with the tools they need to treat injuries, provide critical care, and transfer patients. Suction devices and aspirators are used to remove bodily fluids, clean airways, and remove surgical fluids and body tissues. Breathing problems can be helped using CPR and masks. Moving injured patients between locations is made easier using backboards, stretchers, and first-aid cots. Body components are stabilized with cervical collars, head immobilizers, and splints to prevent additional harm. Defibrillators aid in the resuscitation of cardiac arrest sufferers. Trauma EMT kits are a portable set of medical supplies and equipment for EMTs. Belts, boards, and mats are examples of patient transfer equipment that are used to support and secure persons during transportation.