BOISE, Idaho (AP) — Idaho residents who competed in the Boston Marathon say there is no way to compare the shock and horror caused by the bomb blasts that killed three people and left another 150 injured. Fifty-four-year-old Cindy Fazzio of Kuna was one of 90 Idaho residents who competed in the storied race Monday.

Fazzio says she finished the race 15 minutes before the blasts and was standing about 200 yards away. She says the first explosion caused surprise; but the second left no doubt something profound was happening.

Fifty-two-year-old Michael Ehredt of Hope had finished his race and was one block away when the first bomb went off. He describes the blast like a big "firework" going off. So far, federal investigators say no one has claimed responsibility for the explosions.