The sun beats down with furious intensity on the two playing fields at St. Vincent College. On one field, the Pittsburgh Steelers offense, clad in black mesh shorts and white practice jerseys, are running plays. On the other, the defense, sporting the same black shorts, and gold practice jerseys, are slamming into sleds. Defensive end Brett Keisel, sweat pouring off of his face, walks over with fellow defensive end Aaron Smith and nose tackle Casey Hampton. “Can I get my picture taken with these guys?” he asks, wiping sweat from his brow.