When someone collapses suddenly or is unresponsive:
1) Shake them and shout to try and wake them-if that doesn't work.
2) Call 911 (put your phone on speaker)
3) Begin CPR compressions: two hands in the center of the chest. Press hard and fast until help arrives.
4) If an AED becomes available turn it on and follow the voice prompts.
Original source can be found here.
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