Boston Marathon Heartbreak Headline: "So Many People Without Legs"
From The New York Times' Tim Rohan, quoting a runner:

"These runners just finished and they don't have legs now," said Roupen Bastajian, 35, a Rhode Island state trooper and a former Marine. "So many of them. There are so many people without legs. It's all blood. There's blood everywhere. You got bones, fragments. It's disgusting."

Had Mr. Bastajian run a few strides slower, as he did in 2011, he might have been among the dozens of victims injured in Monday's bomb blasts. Instead, he was among the runners treating other runners, a makeshift emergency medical service of exhausted athletes.

"We put tourniquets on," Mr. Bastajian said. "I tied at least five, six legs with tourniquets."

About the guy -- "Jeff" -- who was seen in some photos having lost both his legs, from Reddit.