I noticed this at the airport the other day as I was in a travel from LAX to HNL. Itʻs an Automated External Defibrillator, it jump starts failing hearts.

"A clear, calm voice walks you through each step. HeartStart senses
and adapts the instructions based on your actions. Using sophisticated technology, The AED Defibrillator quickly decides whether or not to deliver a shock, treating only shockable heart rhythms. It will even coach you through the steps of CPR." (via Philips AED features)

Itʻs easy to use, safe, reliable and portable. But...

"You cannot use the HeartStart™ to treat yourself."

and

"Responding to cardiac arrest may require you to kneel."