County. Weaver, Lisa, and assorted others work on Shannon, the driver of the car on the tracks. She is conscious, but still seems kind of out of it. Weaver asks whether she's experiencing chest pain, and Shannon says she isn't. Shannon looks through the window at Blunt Chest Trauma, as Benton and Dr. Dave continue to work on him. "Is that man from the train?" Shannon asks. Lisa says he is. Shannon asks, "Is he dying?" Lisa says she doesn't know. Weaver asks Lisa to go close the doors, and continues calling out orders. Lisa swings the doors shut...
...and the camera swoops into Blunt Chest Trauma's room; it doesn't sound good. Benton is suturing as Dr. Dave stands by with the paddles. Some random nurse appears in the doorway and says that Finch has asked for Benton to check on a "bad leg injury." Benton hands off Blunt Chest Trauma to Dr. Dave, and takes off, calling for William to follow him.
The halls are crammed with people, blah blah blah it's nothing we haven't seen before. Lily runs up to Benton to tell him about a case that requires his attention; he gives her some orders and tells her he'll be right there. Chen's got a possible liver injury, and Benton gives her instructions even as he works on the "bad leg injury" with Cleo"lympia" Finch. He gently folds back some gauze as Finch tells him he's looking at a "traumatic extrusion of the tibia." Well, of course. Like I said, it's the season of people's bones breaking and poking out of their skin -- only with this one, they've upped the ante; the bone has broken so badly that an entire length of bone -- like, a length half a foot long -- has come completely out of the guy's skin, all in one piece. Like, the guy's got a foot, right, and an ankle, and then...nothing but skin, and tissue, and then more bone. GROSS. And the guy is conscious! So wrong! Benton determines that the guy's major vessels seem intact, and tells them to stick a hard-soled shoe into the wound to keep the pieces of bone apart while they wait for the orthopedic surgeon on call to come take a look at him. (Just kidding.) Chuny calls Benton from the desk and tells him that Carter's on the radio, asking for Benton, and that it's urgent. Benton barks, "Not now!" Chuny replies, in a deceptively casual tone of voice, "He's performing a double amputation by himself." Benton's like, "What?!" Heh. Benton promises No Bone Guy that his bone can be re-implanted, and makes for the phone.
Crash scene. Carter screams into the radio, explaining what he's doing. Crushed Firefighter, if he has any sense, is praying for his life. Benton wants to know where Elizabeth is.