Photograph by John B. Carnett

Crises in the trauma bay play out like a frenetically choreographed modern dance. Here, Dr. Alan Heins performs CPR on a patient in full arrest, while looking to trauma attending physician Jeff Johnson (right, foreground) for guidance.

While working on “Yesterday, They Would Have Died” (October 2003), Michael Rosenwald’s inside look at a high-tech emergency room, Popular Science staff photographer John B. Carnett logged numerous hours in the R Adams Cowley Shock Trauma Center at the University of Maryland, compiling a huge collection of stunning and sometimes shocking photographs. The following photo gallery features a few of the best.

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