"I just found myself lying on the floor. I didn't know what happened," Marie Moe said.
The Norwegian security researcher had been drinking orange juice; now she found herself surrounded by broken glass.
"The juice was in my hair - I thought I must have hit my head and maybe I'm bleeding. It was a frightening moment."
After passing out, Marie was diagnosed with a heart problem, and had a pacemaker implanted. It sits just beneath the skin, marked by a thin white scar, a small computer that keeps her alive.