Luka yells for an ultrasound, and the machine appears and is handed to Carter. "It's good to be home," Carter grins. Sam bursts in and asks for help, so Carter hands off the ultrasound and follows Sam into Trauma Yellow. There, Martin's being propped up carefully. Pratt shows Carter the x-rays, and Carter immediately notices the ankylosing whatever condition, making it twice now that Pratt's been informed as to the problem with the kid's bones. "Unusual to have a degenerative bone disease at his age," Neela says. "It's like juvenile arthritis," Pratt says. "Weakens the spine." Lester's there, too. I guess that's not important. I just thought I'd mention it. Martin decides to crack a joke: "It sucks living life in bubble wrap." Really? I think it sounds a little fun. He probably just hasn't tried hard enough. Lester points out that Martin has a pulmonary contusion and a small pneumo on the right side. Neela -- who now primarily exists to be our medical dictionary -- translates that Martin has a bruise on his lung that is impeding his breathing. "Great. Gives my dad another reason to keep me in the house," rasps Martin with trouble. Carter calls for a bunch of tests, to which Pratt bitterly points out that Luka's always on at them about performing practically zero tests. "What the hell am I supposed to do?" he whines. "Isn't he the Attending?" Sam says pointedly. Frank enters just then and calls Sam away to Alex's school, because the teacher needs to speak with her. She flees as Pratt yells at her to find another nurse. Paging Contrivance: we need you to send Abby to Trauma Yellow.
Neela heads into Trauma Green to get something called a bipap mask, which will apparently help Martin's breathing. Luka calls for her to read what she sees on the ultrasound screen. "Uh, I can do that," whines Malarkey. Luka ignores him. Malarkey frowns. Ah, the tragic plight of the suckmonkey. That should be the title of his autobiography. Neela reads the screen correctly, but the ultrasound isn't quite enough to determine the full problem. Larry takes this moment to grab Luka's arm and plaintively mutter, "He's fragile." Luka's like, "I've said that to every hooker in this town who's gone near my zipper. Your words are meaningless without context."