So he's being charged with overhearing somebody say something?

Hamdan's lawyer said in opening statements that the Yemeni, held for nearly seven years before his trial, was just a paid employee of the fugitive al Qaeda leader, a driver in the motor pool who never joined the militant group or plotted attacks on America.

But prosecutor Timothy Stone told the six-member jury of U.S. military officers who will decide Hamdan's guilt or innocence that Hamdan had inside knowledge of the 2001 attacks on the United States because he overheard a conversation between bin Laden and his deputy, Ayman al-Zawahiri.

[From The Raw Story | Gitmo prosecutor: Flight 93 was shot down on 9/11]

This'll do wonders for the earplug market.