Terrorism Suspect Portrayed as Inexperienced For the first time since he saw the person he believed was his bomb-building accomplice dragged away in handcuffs screaming "God is great," an Oregon terrorism suspect came face to face Wednesday with the man he only knew as Hussein. This time, suspect Mohamed Mohamud sat behind a defense table, and, in the witness box across a federal courtroom, "Hussein" testified that he witnessed Mohamud's descent into radicalism. "Hussein" was the invented cover name for an FBI agent who went from suburban beat cop to one of the lead players in an undercover sting operation against Mohamud, who's now 21 years old. Other details of the agent's life were kept out of testimony to protect his identity, and media and the general public were only permitted to listen to his testimony via closed-circuit television. Mohamud is accused of attempting to detonate a bomb at a Portland Christmas tree-lighting ceremony in November 2010. The bomb was a fake supplied by "Hussein" who, while Mohamud was genuinely being detained, pretended to be arrested as the final act in a months-long acting job. The testimony Wednesday included video and audio recordings of Mohamud discussing the slaughter of thousands of people in eerily mundane language, quoting Osama bin Laden and reveling in the 9/11 attacks. "People jumping from the skyscrapers, I thought that was awesome," Mohamud said in one of the recordings. FILE - This file image released Nov. 27, 2010, by the Multnomah County Sheriff's Office shows Mohamed Osman Mohamud. Testimony from an undercover agent who posed as an al-Qaida recruiter continues Tuesday, Jan. 15, 2013, in the trial of Mohamud. A second man, who posed as an al-Qaida bomb expert, is also expected to testify. (AP Photo/Multnomah County Sheriff's Office, file) Close His defense team has argued he was entrapped, the victim of an elaborate hoax that led an angry but powerless young Muslim man down a path of radicalization that culminated in a plot wholly invented by the FBI, a plot Mohamud was incapable of carrying out without lots of help. Despite the elaborate security measures intended to protect the undercover agents, on two occasions Wednesday, both men's faces were accidentally shown to the media and public when surveillance footage failed to blur their faces. The errors lasted about five to 10 seconds each. "Hussein" is a heavyset, broad-shouldered man, shown with a beard wearing casual Western clothes. The other agent, identified only as "Youssef," is thin, with a narrow face and prominent forehead whose black hair was graying. He wore a suit jacket in the footage, part of his false identity as a politically connected al-Qaida recruiter living in the U.S. Speaking in slow, deliberate, accented English, "Hussein" testified Wednesday that Mohamud rejected every opportunity to back out of the plan that he allegedly conceived: Parking a car near Portland's downtown square and remotely detonating a bomb inside. The agent said he gave Mohamud several assignments in advance of the purported tree-lighting bombing. Mohamud was told to buy toggle switches, cell phones and kitchen timers. "I wanted him to purchase it and feel it and touch it," the agent testified. Experience the realism. The prosecution also played an audio recording of the detonation of a bomb in rural Lincoln County intended to convince Mohamud that the agents were truly al-Qaida operatives preparing for a terrorist plot. Several seconds of talking is interrupted by a loud boom, and Mohamud sounded as if he came away impressed, asking later how much bigger the Portland tree-lighting bomb would be. Earlier Wednesday, a defense attorney used her cross-examination of "Youssef" to raise the idea that Mohamud was a naive, inexperienced teenager manipulated into taking part in a phony plot to detonate a bomb.