Pittsburgh has some awesome locations to shoot environmental corporate portraits.  Shooting on the street can be tricky.  You always have that dude that stands around watching the shoot while adding his two cents and asking questions about your gear.  Keeping your subject comfortable while politely getting your new best friend to move along is an art form in itself, but that is just part of the downtown experience.  It was a cloudy day in Pittsburgh (hard to believe, I know) which gave us beautiful soft natural light.  Soft light, strong composition and a great model = successful shoot.