Unlike regular defibrillators, an automated external defibrillator requires minimal training to use. During these procedures, devices such as heart pumps, pacemakers, or defibrillators might be implanted. Placement of internal pacemakers and defibrillators are done through catheterization as well. Later hackers demonstrated remote control of insulin pumps and implantable cardioverter defibrillators. Implantable defibrillators are used to treat serious life-threatening rapid heart rhythms. They are fully equipped with emergency medical treatment facilities including defibrillators and resuscitation equipment. Trained health professionals have more limited use for AEDs than manual external defibrillators. Police cars may also contain fire extinguishers or defibrillators. Automated external defibrillators are designed for use by untrained or briefly trained laypersons. All fire engines carry first aid equipment, including defibrillators. In 2015, UNH installed life-saving automated external defibrillators in two fraternity houses. Automated external defibrillators have helped increase the survival rate to 35%. Manual internal defibrillators deliver the shock through paddles placed directly on the heart. Most biphasic defibrillators have a first shock success rate of greater than 90%. A major breakthrough was the introduction of portable defibrillators used out of the hospital.