Pete DiMartino assists his then fiance Rebekah Gregory with the apparatus she will use to help her walk down the aisle during their wedding ceremony. Rebekah Gregory has had 16 surgeries to try and salvage her left leg, which was seriously wounded in the Boston Marathon attacks.Ilana Panich-Linsman / for NBC News
Breaking News Emails
Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.