An American man has been charged with helping build explosives for a 2009 suicide attack on a U.S. military base in Afghanistan. That accusation comes after the man, identified as Muhanad Mahmoud Al Farekh, had already been charged with going to Pakistan to train with al Qaeda. Al Farekh is accused of conspiracy to use weapons of mass destruction and conspiracy to murder U.S. nationals. The 2009 attack involved two vehicles that were rigged with explosives and driven by suicide bombers, a complaint says. Al Farekh’s fingerprints were reportedly found on tape used in the second bomb.