Meet 64-year-old blind grandpa David Kuhn.  He's running around the United States to raise awareness and money for the Cystic Fibrosis Foundation. Why? Because his 12-year-old granddaughter is living with cystic fibrosis.

He says, ""My pain, my suffering, my struggling is nothing compared to those."

His Facebook page posted that they have raised $5,000 so far.