Purpose and al-Qaeda in Boston terrorism Boston terrorism, has frequently fueled mass media. The characteristics of the tilt direction, [al-Qaeda? But, unusual! ] I have the feeling that said that? Similarities to the pressure cooker bomb, Al-Qaeda system encourages production process in the past US law enforcement authorities in Boston bomb attacks revealed that there is a possibility that was used is a pressure cooker in explosives. Bomb of pressure cooker, it is that it has been prepared in the bombing attempted incidents in the United States. In addition, and international terrorist organization Al-Qaeda system to publish the fabrication methods on the Internet, is said to be relatively easy, or lead to early perpetrators specific'm uncertain situation. Installation bomb 00 years of pressure cooker, in the bombing attempt case of New York Times Square, as one man the car bomb of Pakistan immigrants. 0 years India, 0 years that it was also used in such as Pakistan. According to experts, published [the Arabian Peninsula Al-Qaeda of] (AQAP) a few years ago, an article entitled [to make a bomb in the mother of the kitchen] on the net.