Because they bombed the finish line there was already a medical tent on scene intended to help marathon runners crossing the finish line, the casualties from this would have been much higher if they weren’t there.

BOSTON (AP) — FBI agents searched a suburban Boston apartment overnight and appealed to the public for amateur video and photos that might yield clues to who carried out the Boston Marathon bombing, while a doctor treating the wounded said one of the victims was maimed by what looked like ball bearings or BBs.

Two bombs blew up seconds apart Monday at the finish line of one of the world’s most storied races, tearing off limbs and leaving the streets spattered with blood and strewn with broken glass. Three people were killed, including an 8-year-old boy, and more than 140 were wounded. […]

Roupen Bastajian, a state trooper from Smithfield, R.I., had just finished the race when he heard the explosions.

“I started running toward the blast. And there were people all over the floor,” he said. “We started grabbing tourniquets and started tying legs. A lot of people amputated. … At least 25 to 30 people have at least one leg missing, or an ankle missing, or two legs missing.”

At Massachusetts General Hospital, Alasdair Conn, chief of emergency services, said: “This is something I’ve never seen in my 25 years here … this amount of carnage in the civilian population. This is what we expect from war.”

HT: DRUDGE