Double A Batteries Kill The harmless double A battery… or are they? There are times when they can create havoc with your attempt to resuscitate a casualty. Prevention Vs Mitigation There’s often confusion about the difference between prevention and mitigation. Both are important; one is more effective. It’s all in the wrist If we’d known how effective wristbands were going to be at preventing drowning we’d have been using them a long time ago.