Ron McCracken of Dallas pays his respects at a makeshift memorial honoring to the victims of the 2013 Boston Marathon bombings ahead of Monday&amp;#39;s 118th Boston Marathon, Sunday, April 20, 2014, in Boston. McCracken&amp;#39;s race last year was cut short due to bombings and Monday&amp;#39;s race will mark his 14th year running in the Boston Marathon. The memorial is where the second of two explosions happened last year near the finish line. (AP Photo/Matt Rourke)