Alone in the darkness beneath layers of rubble, Dan Woolley felt blood streaming from his head and leg. Then he remembered - he had an app for that.
He followed the instructions to bandage his wounds and keep himself awake.
Then, for days, he waited. And he wrote a goodbye note to his family, telling them, "Don't be upset at God."
To read his story of survival, click here.
Below is my interview with Dan Woolley, who is back at home, grateful for every minute with his wife and two young children.