Every year on 16 October, thousands of people across the country are taught the vital skill of CPR, South Yorkshire Police say.
The force says CPR (Cardiopulmonary Resuscitation) and defibrillation are vital to a person's chances of survival if they suffer a cardiac arrest.
Officers never know what they may be deployed to, and can often be the first ones on scene at medical emergencies, or required to give help at incidents, which is why every single one of their officers and PCSOs is first aid trained, the force says.
With the nature of their role, firearms officers are further trained and carry defibrillators in their cars. They can be deployed to medical emergencies if they are closer than an ambulance, providing life-saving care prior to medics' arrival.
Last year, in November, firearms officers Mark Wallace and Josh Lawton were praised by local Sheffield man Karl Oliver who suffered a cardiac arrest while driving. The officers were first on scene within minutes, provided CPR and helped save Karl's life, the force says, highlighting how taking quick action and providing simple but effective CPR can be the difference between life and death.
South Yorkshire Police are encouraging people to spread the message and take opportunities to learn the skill; hopefully you will never need to use it, but you could save someone's life.