"I got your medical records," Abby interrupts Eric desperately. "You didn't tell them Maggie was bi-polar." Eric stops. "What are you, the KGB?" he shouts, betrayed. Sgt. Andrews -- who can smell a kerfuffle from a mile away and a squabble from even further -- shows up just in time to apprehend his miscreant. Eric gapes. Abby insists that she didn't call them there, and tries to protect Eric, but Andrews grabs him to arrest him. Eric wriggles and spouts facile lies about how the guy covering for him was in an accident and he only just now found out about it, and they should call his CO, and he's only there to inform Abby en route back to the base, and it's a really painful and long fib and Abby is clearly wrestling with alarm. Eric begs Abby to confirm this, but Andrews is trying to cuff him. "Let me get my stuff!" Eric screams, trying to bolt to his car. "Just...don't hurt him," pleads Abby, her voice breaking. "At least let me give him something to calm him down!" Andrews refuses. Eric is led off in fury, screaming at Abby. "Is this what you wanted, Abby? Are you happy now? Lock me up and throw away the key, Eric's been a bad boy," he shouts. "Thanks a lot, Abby! Thank you!" Abby stares after him, trying not to cry.

The boy Susan's treating, now with Luka's aid, is in shock. His breathing's bad. Erin looks nervous as Susan tries to intubate. Chen offers help. "Nope," Luka says. "Yes," Susan panics at the same time. "I can't see squat." Erin purses up her perky little face. With difficulty, Susan finally intubates and hands the case off to a startled Chen. "You're not done here," Luka says, surprised. "He's in good hands," Susan calls out, leaving. Weaver, from Trauma Green, sees Susan go and seems perplexed by it. We fade to black hoping this doesn't end later this season with a heartwarming moment in which little Weavus is christened "Susan."

Weaver enters Trauma Yellow to check on the boy. Chen says they put him on a ventilator, but his pressure's dropped. "Could be a tension pneumo," Luka observes. Erin says his sats are dropping. They commence compressions and Luka yells for a thoracotomy tray. They're going to crack his chest. "What is he doing?" Erin whispers to Chen. What? I'm not a med student, and I hate Learning Channel-style medical programming, yet even I've seen a rib spreader at work. And, oh look, here I get to see it again, replete with goo. Rollicking. We get a shot of the boy's heart as Luka pulls apart his rib cage. That's so pretty. Erin looks freaked, and so do I. "Bag him faster," Luka says, leaning down to listen to the heart. "Hear it?" There's a leak somewhere. Luka fiddles with the boy's heart, plugging and clamping something that I wish I understood, and lo and behold, he saves the boy's life. Weaver looks relieved when Chen announces that she's got a pulse. "Wow," breathes Erin, gazing into the boy's open chest. She needs to get out more.