My non-trauma center had one a couple months ago. The ONLY one I have ever been peripherally involved in other than one legendary case from my residency that people reference in hushed whispers.
It was exceptionally traumatic for the staff, and the OB who arrived 30 seconds before the patient did and actually did the section. I have talked to her several times, and it has deeply affected her. Of the 3 ED docs on that night, one is a grizzled old-timer nearing retirement who trained as a surgeon. He'd been peripherally involved in one, years ago. The other 2 docs were both 6 months out of residency and damn good. The OB came. The neonatologist came. It was a full-court, exhausting press.
Both died.
Now, mom had been down more than the ATLS-4-minute rule, but the medics weren't just going to call it. My docs actually got the baby back briefly, but it didn't make it.
I got to help lead the critical incident debriefing. It was horrible.
My thoughts are with the crew at Bellevue, because that's the only explanation of how the baby lived.