It felt like the walls were closing in on me as I forced myself to take a step. And another. And another. I felt like I couldn't breathe--what if I run out of oxygen? My heart rate began to speed up, and so did my breathing.

The man's gait was uneven, like his legs were different lengths. He teetered as he walked, wobbling from side to side, with every step looking as if he were about to stumble.