ABC News is reporting that the black box from the plane that crashed in Pennsylvania has been located. This is the plane on which passengers attempted to gain control from the hijackers.

They also know where the one from the Pentagon crash is too, but can't get to it yet. The two at the WTC are gonna be near impossible to find if they are even still intact and not melted.

it is unlikely that they'll find the ones that hit the towers.
i'm interested to hear what the black box will reveal, as i'm curious to see if there is any footage that reveals who the hijackers are working for.