This is not meant to be a joke. I think a every touring band (just one of many examples) should carry a automated external defibrillator (AED). They may be available at the venues but I think a few people in the band or road crew should be trained to use them. These machines actually give you verbal commands during operation.
From Wikipedia, the free encyclopedia
An automated external defibrillator (AED) is a portable electronic device that automatically diagnoses the life-threatening cardiac arrhythmias of ventricular fibrillation and ventricular tachycardia in a patient,[1] and is able to treat them through defibrillation, the application of electrical therapy which stops the arrhythmia, allowing the heart to reestablish an effective rhythm.
With simple audio and visual commands, AEDs are designed to be simple to use for the layperson, and the use of AEDs is taught in many first aid, certified first responder, and basic life support (BLS) level cardiopulmonary resuscitation (CPR) classes.[2]
http://en.wikipedia.org/wiki/Automated_external_defibrillatorThese can be found in many public and business places. It wouldn't be a bad investment for anyone.