Barack obama. Reporter his real name is jerez stone coleman. Police say he had 11 threats against the president , against metro trains and buses, all of which required emergency responses. Usually i do the percussions first, then i go into the base. Reporter the mtv show is known for its pranks. With me making music, i really know what the heck im doing. Reporter but the threats he made were anything but praisks. In some of the incidents since january, he threatened to assassinate the president , kill a congress, and place a bomb in the potomac avenue station. We take each threat seriously. Reporter he was arrested in a home on fort davis place southeast but no one on the streets seemed to know him. Those that ride the metro buses and trains, even the threat were scary. It needs to be tested. Why did he do that . Metro transit and police were able to track him down from the threatening phone calls. Now, metro transit also tells us they are contacting other Police Agencies to see if he