Popular Leighton in 17 Photos

Derek, Addison, George and Richard share one of the few happy moments on this traumatic day.

In more ways than one, no?

Poor thing.

Miranda's brainchild will come to fruition.

The shard of glass, yes. The rift between Burke and Cristina? That too.

Seriously.

Derek's pleas fall upon unwilling ears.

Now that's a cute little person.

The resident does her best to help the families.

Shaggy, caring and pretty much awesome.

Two interns and one paramedic try to keep a man alive even as the whole hospital is engulfed in a bomb scare.

Burke and Cristina can't handle it much longer.