CW Pittsburgh MS walk 2012 April 23, 2012 / 1:22 PM EDT / CBS News photo credit: d braddock MS1 photo credit: d braddock MS2 photo credit: d braddock MS3 photo credit: d braddock MS4 photo credit: d braddock MS5 photo credit: d braddock MS6 photo credit: d braddock MS7 photo credit: d braddock MS8 photo credit: d braddock MS9 photo credit: d braddock MS10 photo credit: d braddock MS11 photo credit: d braddock MS12 photo credit: d braddock MS13 photo credit: d braddock
