15 mins before departure, El Al flight attendant Nitzan Rabinowitz went to look for her cell phone. At the train station, an Asian man had collapsed and Nitzan administered CPR until paramedics arrived.  Nitzan never told passengers why their flight was delayed, but her phone was later found.

http://www.fromthegrapevine.com/lifestyle/flight-attendants-save-life-looking-for-cell-phone-el-al-airlines