根据受害人之一的说法，大概是这样： David Zabner was descending a mountain when he heard a scream. “I turned around to find a man brandishing a knife at me. I didn’t immediately realize what was happening. I thought my coworkers had been pushed, and he, for some reason was trying to push me,” Zabner told IPR News from his hospital room. “And then I looked down at my shoulder and realized, 'I…