Joel Henry Hinrichs III

From Real Life Villains Wiki

Joel Henry Hinrichs III was a man who blew himself up outside a packed football stadium at the University of Oklahoma in 2005.  Although officials have not jumped to conclusions, there is plenty of evidence that he intended to kill more than just himself.  Hinrichs had made contact with jihadists, attempted to purchase ammonium nitrate, had an apartment packed with explosives, and had strapped bombs onto buses parked at the stadium.