KC: There’s smoke really bad.

911: Sit tight and we’ll get to you as soon as we can.

KC: I know you’ve got a lot in the building but we’re up on the top. Smoke rises too. Come on, I can barely breathe now – can’t see. It’s really bad, it’s black, it’s arid. We’re young men, not ready to die.

911: Hello?

KC: Hello… there’s three of us, two broken windows… Oh God! Oh…

— Kevin Cosgrove, cell phone conversation from South Tower,  World Trade Center