...and the FBI and other U.S. government intelligence agencies knew all about it but did nothing! Their general consensus was that Hasan's activity wasn't important enough to investigate.
So let's ask the obvious question: WHAT THE #%@$-ING HELL GOOD IS THE DEPARTMENT OF HOMELAND SECURITY?!?
No way around it: the United States government effed-up heinously. Homeland Security failed! The mechanism put in place by George W. Bush, Congress, and continued by Barack Obama SCREWED THE POOCH!
There is no more justification for the existence of the Department of Homeland Security, if it couldn't prevent something like this while knowing fully well that Hasan was apparently trying to actively conspire with the same bastards that caused the 9/11 attacks to begin with.
Ask yourself this folks: if your own government can't keep us safe from an American soldier who was seeking to collaborate with this country's enemies when it knew Hasan was trying to do so, how CAN it keep us safe from anything?
Protect yourselves. Lord knows the government can't.