The terrorist attack at the 2013 Boston Marathon claimed the lives of three people, but it changed the lives of many. One of them was Adrianne Haslet, a professional ballroom dancer who was a marathon spectator that day when she lost her left leg below the knee in the second of two bomb blasts.
http://www.moveforwardpt.com/Radio/Detail/boston-marathon-bombing-survivor-adrianne-haslet-i