The next thing I knew, my eyes were fluttering open. I had only a second to realize I'd just woken from sleep, when a vision hit me with the subtlety of a sledgehammer. An old man, gray and wrinkled but with a full head of hair, was walking next to an old woman in a park under bright sunshine. He smiled down at his companion, but then his smile turned to a grimace and he reached up a hand to his chest. He was having a heart attack. The woman cried out when he fell to one knee. As he clutched at the fabric of his shirt, I saw the tattoo around his wrist.