A year after Boston Marathon bombings, Bill Iffrig reflects on tragedyHe already finished. SI Staff | Apr 15, 2014A year after Boston Marathon bombings, Bill Iffrig reflects on tragedy / Bill Iffrig was blown off his feet after the Boston Marathon bombs last year, but finished the race :: John Tlumacki/The Boston Globe via Getty Images He already finished. Published Apr 15, 2014SI STAFF