Only a few yards away from the end of the Philadelphia Love Half Marathon, a runner's knees began to give way. Luckily she got help from three complete strangers who supported her until she couldn't go any further and then carried her to the line so she could cross for herself. While it is unclear whether she was collapsing from injury or simply fatigue, and while none of their names are yet known, the story of this act of kindness in the city of brotherly love has gone viral. Watch for yourself here:
