BOSTON - Boston's doctors are flabbergasted by the injuries suffered during the Boston Marathon bombing saying they are similar to what some of them have seen while treating U.S. troops after IED attacks in Iraq and Afghanistan.

Doctors say the 176 victims are 28 to 71 years old. They were maimed by what could be shards of garbage cans or nails put in the bombs.

The youngest victim of yesterday's attack, 8-year-old Martin Richard, of Dorchester, Massachusetts, was killed waiting for his father to finish the race. His mother and sister were also severely hurt.

The attack happened at about the four-hour mark of the race as a steady stream of recreational runners was crossing the finish line and their families were cheering them on.