Boston amputees show the world their strength From: Nightly News - 10/07/2013 By: Brian Williams The Boston marathon survivors who participated in a running and mobility clinic organized by the Challenged Athletes Foundation said the event felt like another milestone in their long road to recovery. View the video (2:41) at: http://www.nbcnews.com/id/3032619/#53212597 http://video.msnbc.msn.com/nightly-news/53212597 Link: Challenged Athletes Foundation http://www.challengedathletes.org