Monday’s Boston Marathon explosions have devastated the city and its residents. Lost in the tragedy’s aftermath was the typically joyful post-marathon celebration – a payoff for the participants’ months of training. UMass Amherst economics lecturer John Stifler was at the race. He also writes about running for New England Runner Magazine and the Daily Hampshire Gazette. Stifler spoke to New England Public Radio’s Henry Epp about the future of the race’s security and what it was like for runners who were stopped short of the finish line.