I parked in a small lot behind the building and paused to compose myself. The rhythmic thump of my heartbeat in my ears grew louder as I stepped out into the heat. The ramp to the double glass doors was a tunnel collecting the roar of traffic and distant construction. A fine sheen of sweat collected on my forehead and the small of my back. The distant sound of guns filled my mind, and for a moment, I stood at the door with one foot in reality and the other in a distant past.