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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit11
Thanks to Boylan's drawing, within 6 weeks, police follow a trail of evidence to this man, Richard Allen Davis, who looks nothing like the original police sketch, but very much like the man Boy..2008-10-02 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit10
Boylan interviews the girls separately, probing their memory for clues. She does not interrogate them, but engages them in casual conversation. Her questions are always indirect. I divert them throug2008-10-01 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit9
Boylan believes that a witness's memory is as crucial to a case as any physical evidence. What I would ultimately want would be for police to really protect that memory as evidence like they wo..2008-10-01 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit8
The FBI agents race in from every direction. Thanks to the FBI's use of a secret informant, the bombing conspiracy is foiled and the suspects are put behind bars. Bob Spence has refused the wit..2008-09-30 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit7
Despite the risk, Spence allows the FBI to rig a video camera in the dashboard of his truck. Here, the hidden camera records one of the suspects describing how he is going to make a bomb. But getting2008-09-30 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit6
How does the bureau use informants to bring dangerous criminals to justice? They have several top-secret strategies which we are about to reveal. FBI inspector Bob Garrity says the first step is to f2008-09-29 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit5
If threw these nails out into the crowd, extremely deadly shrapnel. Once the FBI knows what materials were used to build the bomb and how it was concealed, agents make a public appeal for information2008-09-29 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit4
Unlike the fertilizer bomb used in Oklahoma City, device analysis reveals that the New Jersey bomb is made from common household items. The problem is that there are so many things that can be used t2008-09-28 编辑：echo
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[自然百科] 探索世界奥秘之FBI(揭密联邦调查局)Unit3
Back at the explosives lab, examiners use a high-tech instrument called a Raman spectrometer, a device that determines if a package contains explosive material. With the Raman, what we are doing is t2008-09-28 编辑：echo
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