The Boston Marathon bombing last week rocked the whole country, killing three people and turning dozens of others into amputees. Over and over again, the lower-leg injuries sustained were compared to those that U.S. forces seen after stepping on improvised explosive devices overseas. It stands to reason, then, that few people could offer more credible words of encouragement to the new amputees in Boston than a wounded warrior who lost limbs serving in the military. This video is making the rounds online today, including on the blog Blackfive: [HTML1] The YouTube page for the video points viewers to the Celeste…