Aftershock

Who am I,
and come to think of it where am I,
and how did I get here?

The label on my wrist says I'm John Doe.
In fact, all the bodies around me are
labelled John Doe?

And the name means nothing to me,
I'm unfamilliar, and the more I think the
more my head's in bits?

Perchance I could be you?