This is an incredible story. A man who received a double lung transplant is racewalking his first marathon; he will be accompanied by the father of the 14 year old daughter whose lungs were donated. It's such a difficult story to read--there is so much pain in the world, but it is always so amazing when people can draw some strength from the pain. The story also reminds me of my wife, who has an emphysema-like condition due to her bone marrow transplant and who had two hip replacements due to long-term steroid use (just like the transplant recipient in this article). Life is so tenuous. I hope everyone spends some time with their families today.