Callie, Bailey, Cristina, and Izzie head into the ambulance bay, where they get a patient, Jacob, who had bypass surgery two weeks earlier and now is having pain at the site. But it seems worse and more urgent than I can make it sound, given the fact that I didn't catch a lot of the actual medical stuff that came out of the medic's mouth. This is a good example of why I never become a doctor -- that, the idea of med school, biology classes, and the level of girly screaming that comes from me having to watch fake surgery with fake blood on a television drama every week. The other medic then asks if the docs can take it from here; they need to get back into the vehicle to create the maximum drama from what's about to happen. I mean, "they want to go help at a big freeway accident." Cristina and Izzie simultaneously say they'll page Hahn, which leads to more bickering as Cristina asks Izzie when she'll realize that she can't handle cardio. A siren gets louder through all this and comes careening around the corner into the bay. Everyone except Meredith is too busy yammering to notice what's happening and she finally screams for them to all get out of the way as the ambulance tears through the bay and crashes into the other one that's about to leave, causing it to flip over on its roof.

It's certainly not Jacob's day, as a large shard of metal flew from the collision and pierced his leg. Izzie and Cristina run him inside while Mere and Callie run to the overturned ambulance, and Bailey calls for the fire department and for gurneys. Callie looks inside the window and sees Ray, one of the paramedics who was just about to leave, pinned into his seat and hanging upside down. Callie asks if he's okay. Instead of answering he pleads for Stan, his partner, to say something. Stan doesn't look to be in good shape, since he's got part of the vehicle pinning him through his abdomen to the roof, which is now essentially the ground. He manages to take a breath and open his eyes, and Meredith can only watch, looking panicked and nauseated. She gets hold of herself and tells the medics that they'll get them out, but Callie warns her to wait for the fire department, since the doors won't move as they are. Bailey calls for Callie's help at the other rig, so she leaves Meredith with instructions to page someone for help and keep the guys talking. Stan turns to Meredith and begs her not to leave, and she calls for the Chief.