Joel Atkin, a student of United Hatzalah’s NREMT training program helped resuscitate an older man who had collapsed near where Atkin was playing his daily tennis game. Noticing the commotion, he supervised CPR, provided ventilation and used a defibrillator to get a pulse.

https://israelrescue.org/blog/emt-in-training-saves-life-while-playing-tennis/