FILE - In this April 21, 2014 file photo Adrianne Haslet-Davis raises her arms at the finish line of the 118th Boston Marathon, after she completed a short distance of the course in Boston. The Boston Marathon bombing survivor, who had planned on running this year's race, says she can't physically do it after getting struck by a car last month. (AP Photo/Charles Krupa, File)

FILE - In this April 21, 2014 file photo Adrianne Haslet-Davis raises her arms at the finish line of the 118th Boston Marathon, after she completed a short distance of the course in Boston. The Boston Marathon bombing survivor, who had planned on running this year's race, says she can't physically do it after getting struck by a car last month. (AP Photo/Charles Krupa, File)